This problem has been solved! Is NH4Cl an acid or base? Strong vs Weak - Ammonium chloride Classify the compounds given below as a acid, weak acid, strong base, or weak base. What is the cast of surname sable in maharashtra? It is formed from the neutralization of strong acid, namely hydrochloric acid (HCl) with a weak base, namely ammonium hydroxide (NH 4 OH). We then solve for x, which is equal to [H+] concentration. Other salts that form neutral solutions include potassium nitrate (KNO3) and lithium bromide (LiBr). a. CaO b. CO2 c. Al(NO3)3 d. NaNO3. Check all that apply. In each successive ionization reaction, an H+ ion is removed from the reactant. NH4+ is a cation that is the conjugate of NH3, a weak base. A theory that accounts for the colors and the magnetic and other properties of transition-metal complexes in terms of the splitting of the energies of metal ion d orbitals by the electrostatic interaction with the ligands. a. NH_4^{1+}. F e C l 2 , N a H C O 3 , N a N O 3 , F e ( N O 3 ) 2 , F e ( N O 3 ) 3. Classify these salts as acidic, basic, or neutral: Na_2S, KCl, LiBr, NH_4ClO_4, K_2SO_3. NO3- nitrate Is NH4ClO4 salt acidic basic or neutral? What is the pH of a solution that is 0.076 M NH4Cl at 25 C? SO4^2- sulfate Ka1 = x^2/0.200-x = 6.9 x 10^-3 Do Eric benet and Lisa bonet have a child together? NH4ClO4. NH4Cl is not a base as it does not fit into the definition of base given by any of the acid-base theory viz. KCN What is the cast of surname sable in maharashtra? What is a conjugate acid-base pair. NH4Cl. pH of NH4Cl Acidic or Basic? - Techiescientist Why is water considered to be neutral. d. (NH_4)_2SO_4. CaCl_2. H3PO4 = .200 - 0.034 = 0.166 M NaCl, Classify the salt is acidic, basic, or neutral. Identify the conjugate base for each acid. This can also be justified by understanding further hydrolysis of these ions. Solution of ammonium perchlorate would be slightly acidic, and its pH governed by the equilibrium: NH_4^+ +H_2O(l . Set up an ICE table. We can then calculate the OH- concentration. Write names and formulas for three other salts of strong bases and strong acids. Another approach would be letting N H X 4 C l O X 4 \ce{NH4ClO4} NH X 4 ClO X 4 react with water, and setting up the net ionic equation. It occurs near the volcanoes and forms volcanic rocks near fumaroles. Ra(OH)2 H2SeO3 HC2H3O2 KOH. NH 4 Cl is an acidic salt. The value of pH for different substances ranges from 1 to 14 on the pH scale in which 7 is the value of pH for the neutral solution. Classify the characteristics as qualities of either acids or bases. But remember that solubility is a complex property to be explained by many factors & just the above logic would be insufficient for all compounds. Classify the compound given as a strong acid, weak acid, strong base, or weak base. 0.034-y 0.034 + y y Neutralization is the reaction between an acid and a base that results in the formation of a salt that derives its properties from its constituent i.e. To tell if (NH4)2SO4 (Ammonium sulfate) forms an acidic, basic (alkaline), or neutral solution we can use these three simple rules along with the neutralizat. Re: NH4ClO4 We now go through xn-1 for xn, where we continuously get 0.0002391. LiOH is a strong base and HCl is a strong acid. Is NH4ClO4 acidic basic or neutral? 0.17-x. HCO3- bicarbonate Verified answer. When a weak acid (HA)(HA) is titrated with a strong base, such as NaOHNaOH what species are present in the weak acid solution before the titration is started? The reaction of a weak acid and strong base results in basic salt. Three different theories define acid and base: According to the Arrhenius theory, in an aqueous solution, an acid is a substance able to donate hydrogen ions, while a base donates hydroxide ions. ), Administrative Questions and Class Announcements, *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation), *Biological Importance of Buffer Solutions, Equilibrium Constants & Calculating Concentrations, Non-Equilibrium Conditions & The Reaction Quotient, Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions, Reaction Enthalpies (e.g., Using Hesss Law, Bond Enthalpies, Standard Enthalpies of Formation), Heat Capacities, Calorimeters & Calorimetry Calculations, Thermodynamic Systems (Open, Closed, Isolated), Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric), Concepts & Calculations Using First Law of Thermodynamics, Concepts & Calculations Using Second Law of Thermodynamics, Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy, Entropy Changes Due to Changes in Volume and Temperature, Calculating Standard Reaction Entropies (e.g. Answer = SCl6 is Polar What is polarand non-polar? This answer is: Study guides. Is nh4clo4 acidic basic or neutral? Is NH4ClO4 salt acidic basic or neutral? - Answers 0 A. ammonium bromide B. barium fluoride C. sodium nitrate D. sodium nitrite, Classify the mentioned compound as acids or bases, weak or strong. Classify each salt as acidic salt, basic salt, or neutral salt. In an aqueous solution, classify these compounds as strong acids, weak acids, strong bases, weak bases or other. Why is water considered to be neutral. In Leclanch cells, the aqueous solution of ammonium chloride was used as an electrolyte. Is NaHC2O4 acidic? - Answers conjugate base of H3PO4 conjugate base of HPO42- conjugate base of NH4+, In an aqueous solution, classify these compounds as strong acids, weak acids, strong bases, weak bases or other. 3) neutral . Classify each of the compounds below as strong or weak acids, strong or weak bases, or salts: A. HCl. Ka = [H+][A-]/[HA] = x^2/0.17-x = x^2/0.17 HCN, Identify the compound as acid, basic, or neutral when dissolved in water. 0.076. Give the conjugate base for each compound below. How many minutes does it take to drive 23 miles? a. KBr b. AlCl_3 c. NaNO_3, Classify each salt as acidic, basic, or neutral. KClO4 is less soluble{insoluble in water} due to less hydration energy of K+ than Na+ on account of larger size of K+. A. NcCN B. NH4ClO4 C. K2SO3 D. LiBr E. KCl. In the subtropics, why are the surface salinities much higher than the deepwater salinities? An orange is acidic. Now we set up an ICE table for the third ionization. H_2SO_4. Wiki User. SrI2, The graph of a basic solution titrated with an acid's pH ends with a pH of 2 or 11, The graph of a acidic solution titrated with an bases pH ends with a pH of 2 or 11, The equivalence point on a weak acid / strong base titration curve is above or below pH of 7. Classify the salt LiClO4 as acidic, basic, or neutral. Determine the [OH-], pH, and pOH of a solution with a [H+] of 7.0 x 10^-7 M at 25 C. [H+] and [OH-] are related through the equation 1.0 x 10^-14 = [H+][OH-]. Identify the appropriate component of each pair as an acid or conjugate base. It is used for producing lower temperatures in cooling baths. Is it a strong acid, a weak acid, a strong base, or a weak base? The H3PO4 concentration can also be determined. Are the contents of the stomach acidic basic or neutral? Almost 90% of the total global production of NH4Cl is used in the production of fertilizers. 1) KNO3 2) NaClO 3)NH4Cl, Classify the salt as acidic, basic, or neutral. acidic Since the base is a weak one and the acid is a strong one, the solution of ammonium perchlorate is going to be acidic. 0.17. Since Ka2 is so much smaller than Ka1, we can assume Ka2 equals 6.2 x 10^-8. It is a salt of a strong acid and a weak base, which are hydrochloric acid and ammonia, respectively. acid, base, acidic oxide, basic oxide, acid salt, salt P_4O_10 Na_2O Na_2SO_4 HCl CO_2 KH_2PO_4 KOH MgO NaNO_3. Can you please explain how you got the answer? 6.2 x 10^-8 0.034 0 It has a refractive index of 1.642 at 20C. What is the pH of a basic solution at 25 C? What acidic objects are in the house? The Kb2 for this reaction can be calculated. After this ammonium chloride is separated, washed, and dried from the precipitate. (1) MgCl_2. a. Ca(NO_3)_2. Classify each salt as acidic, basic, or neutral: AlCl3, KBr, and LiCN. +x +x x x 0. Since the base is a weak one and the acid is a strong one, the solution of ammonium perchlorate is going to be acidic. The reaction equation for the Solvay process is given below: CO2 + 2NH3 + 2NaCl + H2O > 2NH4Cl + Na2CO3. This percentage is sufficiently small, so this value can be used for x. A strong acid and weak base produce an acidic salt. (2) HClO_4. Answer = C2F2 ( Ethyne ) isNonpolar What is polarand non-polar? Some aquatic animals utilize ammonium chloride to maintain their buoyancy in seawater. HPO42- = H+ + PO43- Solve for x. Register Alias and Password (Only available to students enrolled in Dr. Lavelles classes. NH4+ is the conjugate acid of a weak base (NH3), so it would result in an acidic aqueous solution. Polar "In chemistry, An acid is a molecule or ion capable of donating a, In chemistry, bases are substances that, in aqueous solution, are slippery to the touch, taste astringent, change the color of. f) LiNO_2. Therefore, the salt will be neutral. We insert this value into the Kb1 expression to solve for x. 1. Indicate whether each of the following compounds will give an acidic, basic, or neutral solution when dissolved in water. acidic acidic acidic. NH4Br,KCL,NaHCO3 Explain why? Calculate the [H+] and pH of a 0.0040 M butanoic acid solution. If you mean table salt, it is neither acidic nor basic. Ammonium Chloride naturally occurs as a mineral called sal ammoniac. K_2SO_4, NH_4NO_3, NaNO_2, Classify these salts as acidic, basic or neutral and explain why. 2013-10-21 01:58:53. 1.26-x x 10^-7 + x Is NH4ClO4 acidic, basic, or neutral (dissolved in water)? It is {/eq}. ), *Thermodynamics and Kinetics of Organic Reactions, *Free Energy of Activation vs Activation Energy, *Names and Structures of Organic Molecules, *Constitutional and Geometric Isomers (cis, Z and trans, E), *Identifying Primary, Secondary, Tertiary, Quaternary Carbons, Hydrogens, Nitrogens, *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections), *Cyclohexanes (Chair, Boat, Geometric Isomers), Stereochemistry in Organic Compounds (Chirality, Stereoisomers, R/S, d/l, Fischer Projections). 2) Basic salt: the salt which is basic in nature is called basic salt. Answer = C2Cl2 is Polar What is polarand non-polar? It is an inorganic compound and a salt of ammonia. Ka = (1.0 x 10^-14)/(1.8 x 10^-5) = 5.556 x 10^-10 The pH value for NH4Cl lies between 4.5 and 6 and its pKa value is 9.24. base Question : Is MgBr2 ( Magnesium Bromide ) an ionic or covalent bond ? Therefore, it is an acidic salt. My aim is to uncover unknown scientific facts and sharing my findings with everyone who has an interest in Science. It is also used as a feed supplement for cattle. 0.39-x x. x Classify NaOH as an ionic or molecular compound. Is Sugar solution acidic basic or neutral? (3) Cu(OH)_2. Classify MgBr2 as an ionic or molecular compound. -y +y +y . . Postby Erika Li 1E Mon Jan 17, 2022 10:51 pm. 0.200-x x x Techiescientist is a Science Blog for students, parents, and teachers. OHCH_2CH_2OH, Classify each of the following as either a Bronsted-Lowry acid, base, or as amphiprotic. ), Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams, Work, Gibbs Free Energy, Cell (Redox) Potentials, Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH), Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust, Kinetics vs. Thermodynamics Controlling a Reaction, Method of Initial Rates (To Determine n and k), Arrhenius Equation, Activation Energies, Catalysts, Chem 14B Uploaded Files (Worksheets, etc. KBr NaF AlCl_3 Neutral salts: ____ Acidic salts: ____ Basic salts: ____, Classify each of the following salts as acidic, basic, or neutral. The amount of strong base or acid that must be added to one liter of a buffer in order to change its pH by one unit is an expression of ____________. Phosphoric acid, H3PO4, is a triprotic acid, meaning that one molecule of acid has three acidic protons. It appears as a hygroscopic white solid. As hydration energy is size . Ka2: H2PO4- = H+ + HPO42- K2SO3, KCl, NH4ClO4, LiClO4, NaF. Strong acid along with weak base are known to form acidic salt. 1.0 x 10^-14/0.00045 = 2.2 x 10^-11 M. Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. b. K_2SO_4. Ka3: HPO42- = H+ + PO43-. This is equal to H+ so we can then calculate pH. A) K OH B) H_3PO_4 C) HNO_3 D) H_3PO_3. . Classify each chemical compound listed below as ionic, molecular, acid, and/or a base. Bronsted-Lowry theory: A molecule that readily gives away protons in an aqueous solution is an acid while the molecule that takes up those protons, given away by another molecule, is a base. To determine if a salt if acidic or basic, you should consider the relative acidity and basicity of its ions. x^2 = Ka(0.17) The chemical equation for the same is written as follows: Double decomposition of ammonium sulfate on reaction with sodium chloride also results in the formation of ammonium chloride. Is kanodia comes under schedule caste if no then which caste it is? Is NH4ClO4 acidic basic or neutral? Use the method of successive approximations in your calculations. Ka for NH3 can then be calculated: It is found in the form of white crystalline salt which is highly soluble in water (about 37%). acidic acidic acidic. Nature of salt form depends upon the strength of acid and base used. Ammonium Chloride is commercially prepared by a reaction between ammonia and hydrogen chloride also known as hydrochloric acid when present in an aqueous solution. Use this value to determine pH. Predict whether the following salts will be basic, acidic, or neutral. Mimic the routine in the online code. Chem 1412 Hw 10 Flashcards | Quizlet Postby 705676154 Sun Dec 05, 2021 11:08 pm, Postby chemoyku dis 1B Sun Dec 05, 2021 11:13 pm, Postby 905695298 Sun Jan 16, 2022 8:36 pm, Postby Natalie Quilala 1I Sun Jan 16, 2022 8:41 pm, Postby Erika Li 1E Mon Jan 17, 2022 2:51 pm, Postby Srikar_Chintala_1E Mon Jan 17, 2022 2:56 pm, Postby amara ajon 1d Mon Jan 17, 2022 3:29 pm, Return to Identifying Acidic & Basic Salts, Users browsing this forum: No registered users and 1 guest. This white or colourless crystalline salt is noteworthy for its high solubility in many solvents. 4. (D) F^-. F- fluoride Determine the [H+], pH, and pOH of a solution with an [OH-] of 9.9 x 10^-6 M at 25 C. [H+] = 1.0 x 10^-14/9.9 x 10^-6 = 1.0 x 10^-9 M. Determine the [H+], [OH-], and pOH of a solution with a pH of 12.41 at 25 C. Determine the [H+], [OH-], and pH of a solution with a pOH of 4.38 at 25 C. The Kw for water at 0 C is 0.12 x 10^-14. Lastly, the reaction of a strong acid with a strong base gives neutral salts. Na3PO4 can't act as an acid. And thus the acid base behaviour of the salt depends on the ammonium ion. 0.39 M. 0 0 Which of the following salts would produce the most basic aqueous solution? Calculate the pH and pOH of an aqueous solution that is 0.050 M in HCl(aq) and 0.060 M in HBr(aq) at 25 C. Because both HCl(aq) and HBr(aq) are strong acids, they are completely dissociated in water. Therefore, this salt is considered acidic. 0.00045 0 0.00045 HBrO (WEAK) Solved For the following salt, show the ions which are - Chegg A weak acid and strong base produce a basic salt. I- iodide, CH3COO- acetate When an acid or base is dissolved in an aqueous solution it results in dissociation of its molecules resulting in the formation of ions, therefore, the acidity or basicity of a substance in an aqueous solution can be understood by drawing its dissociation equation. LIST ACID. 3. x = [H+] = 0.0011 M x = sqroot((7.6 x 10^-6)(0.17)) In general, a buffer is a solution containing a weak acid and its _____________, or a weak ____________ and its conjugate acid. Ammonium Chloride is an acidic salt. Discuss the relative merits of each. To tell if NH4ClO4 (Ammonium perchlorate) forms an acidic, basic (alkaline), or neutral solution we can use these three simple rules along with the neutralization reaction that formed NH4ClO4 .First we need to figure out the acid and base that were neutralized to form Ammonium perchlorate. Chemistry 116 Exam 3 Flashcards | Quizlet HI, H2CO3, HF, LiOH, Ba(OH)2, CH3NH2, NH4Cl, Na3PO4, HNO3. Answer = C2H6O is Polar What is polarand non-polar? To tell if NH4ClO4 (Ammonium perchlorate) forms an acidic, basic (alkaline), or neutral solution we can use these three simple rules along with the neutraliz. NO2- nitrite Name each of the following as an acid or base or neutral. 0.034 0.034 0 Is nh4clo4 acidic basic or neutral? CH_3NH_2, Identify the compound as acid, basic, or neutral when dissolved in water. Because 0.17 M is more than 1000 times greater than Ka, the assumption can be made that the concentration change x is small compared to the initial concentration. Estimate the pH and the concentrations of all species in a 0.200 M phosphoric acid solution. YouTube. 1.6 x 10^-7 = x^2/1.26 When was AR 15 oralite-eng co code 1135-1673 manufactured? Which of the following is not a basic salt? AsO4^3- arsenate, Equation to determine the charge of the metal ion, charge of complex ion - total charge of ligands, The ligands of a complex ion are molecules or anions with one of more _______, have two donor atoms that are far enough from each other such that each bonds to the metal ion. x = 0.0013 M LiOH, RbOH, (CH3)2NH, NH4CI, Na3PO4, HCIO4, H3PO4, HBr, HN3. The chloride anion is the extremely weak conjugate base of a monoprotic strong acid (HCl), so it also has no effect on the solution pH. Do you have pictures of Gracie Thompson from the movie Gracie's choice? ClO4- perchlorate What is sunshine DVD access code jenna jameson? OH- hydroxide Hydroiodic acid Sodium bromide Sodium hydroxide Glucose Methyl a, Classify the following compounds into: Acid, Base, Salt, or Solid a) H2O2 b) Ba(OH)2 c) NaHCO3 d) H3PO3 e) CH3OH f) NH4Cl. We can then calculate the pH. Considering all the above-mentioned theories this can be easily deciphered that the properties of ammonium chloride molecule do not fit into the definition of the base, rendered by any of these theories, therefore, NH4Cl is not a base. We set up an ICE table for the first ionization to determine [H+]. (B) I^-. As discussed earlier, the combination of strong acid and weak base results in the formation of an acidic salt. Ni: [Ar] 4s^2 3d^8 ClO- hypochlorite Classify HNO3 as a strong electrolyte, a weak electrolyte, or a non-electrolyte. Is CH3COONa an acid or base? The concentration of hydrogen ions is calculated as: As the value of Ka = NH4Cl is 5.6 X 10-10 at 25C, Also, we are calculating the hydrogen ion concentration for 1 M NH4Cl solution. pH = -log(6.5 x 10^-6) = 5.19. -x +x +x All other trademarks and copyrights are the property of their respective owners. The pH value for 1 M solution of NH4Cl can now be calculated as: As the pH value of ammonium chloride is less than 7, therefore, NH4Cl is acidic. They are given below: Lewis theory: A molecule that gives away an unshared pair of electrons to another molecule is known as a base while the molecule that accepts those electrons is termed an acid. However, the highly viscous nature of TMS may affect facile ion transport and hence is preferred in combination with other electrolytic solvents. x = 0.00045 Call it x1. (A) C_7H_5O_2^-. ClO4- is an anion that is the conjugate of HClO4, a strong acid. O2^2- peroxide How can you experimentally determine the pKa of acetic acid? It is soluble in liquid ammonia, hydrazine, and slightly soluble in acetone. A strong acid and strong base produce a neutral salt. When a weak acid (HA)(HA) is titrated with a strong base, such as NaOHNaOH what species are decreasing in concentration before the equivalence point is reached? The reaction for the preparation of NH4Cl is as follows: As clear from the above-mentioned chemical equation, NH4Cl is a neutralization product of hydrogen chloride, which is a strong acid and almost completely ionizes in the aqueous solution to form protons, and ammonia, which is known to be a weak base. As seen in the above equation on dissolving in aqueous solution NH4Cl releases hydronium ions due to the hydrolysis of ammonium ions. The pH value for NH4Cl lies between 4.5 and 6 and its pKa value is 9.24, therefore, it is mildly acidic. Become a Study.com member to unlock this answer! Ammonium chloride is a strong electrolyte because it dissolved fully into . x^2 + 1.52 x 10^-5x - (1.52 x 10^-5)(.0040) = 0 Is K2SO3 acidic basic or neutral? - Answers NH4+ is the conjugate acid of a weak base (NH3), so it would result in an acidic aqueous solution. Ammonium Chloride is majorly manufactured as a by-product of the Solvay process which is used for the production of Sodium Carbonate. 1) Sodium aluminate. Since the Kb2 value is so small, the change in concentration, y, is negligible compared to the initial concentrations. The Ka of butanoic acid is 1.52 x 10^-5. When was AR 15 oralite-eng co code 1135-1673 manufactured? Identify the most acidic proton in each of the following compounds: Give the formula for sodium hydroxide and classify it as either ionic or molecular. NH4ClO4 is an acidic salt. weak electrolyte c. HCO_3^{1-}. pH can be found by pH = -log[H+] and pOH can be found by pOH = -log[OH-]. The boiling point of ammonium chloride is 520C. Classify each substance as either a strong or a weak electrolyte, and then list (a) the strong acids, (b) the strong bases, (c) the weak acids, and (d) the weak bases. The concentration of OH- formed is negligible. ; Lewis theory states that an acid is something that can accept electron pairs. 0 0 Why is water considered to be neutral. Classify the compound given as a strong acid, weak acid, strong base, or weak base. H3PO4 = H+ + H2PO4- Name the compound HCH3CO2 and classify it as either ionic or molecular. Classify the compound given as a strong acid, weak acid, strong base, or weak base. acidic acidic acidic. It is also used for eliminating cough as it has an expectorant effect i.e. . How would you classify phosphoric acid H_3PO_4? Classify Ba(NO3)2 as a strong acid, a strong base, a weak acid, or a weak base. e. KClO. While basic salt is formed by the combination of weak acid along with a strong base. Is it an acid or a base? HBr NH3 HClO4 HF HCN Ba(OH)2 NaOH. [H+] = 0.000240 M HF. The reaction between a strong base KOH and the strong acid HClO4 produces KClO4. 3) KNO_2. Classify the following as either acidic, basic or neutral NaOH, HCl, H_2O, Mg(OH)_2, H_2SO_4. -z. However, the cation of this compound is derived from a weak base, and so it will pull OH- from the water and be acidic. Co: [Ar] 4s^2 3d^7 AlCl_3, Classify the following as basic, neutral, or acidic salts. It exists both in anhydrous form and as a trihydrate. Ammonium Chloride is denoted by the chemical formula NH4Cl. An acid-base reaction involved the transfer of H+ ions from one substance to another. Neither K+ nor ClO4- has any tendency to donate or accept a proton in dilute aqueous solutions. Classify these salts as acidic, basic, or neutral. KCL, NH4Br - Brainly SO32- + H2O = HSO3- + OH- Is NH4ClO4 acidic basic or neutral? - Answers (a) Neutral (b) Basic (c) Acidic. H2SO3 = y = 7.1 x 10^-13 a. NH4I b. LiCN c. Na2CO3 d. LiBr e. NH4NO3, Determine whether each of the following substances is an acid, a base, or neutral. Classify each salt as acidic salt, basic salt, or neutral salt. Study with Quizlet and memorize flashcards containing terms like strong acids, strong bases, What is the most basic definition of acids and bases? Classify these compounds as a strong acid or a strong base, a weak acid or a weak base, neutral molecular compound, or ionic salt. acid = proton donor. Understand weak acids and bases, and the applications of neutralization reaction. a. Zn(NO_3)_2. 3.2. The major use of ammonium chloride is in nitrogen-based fertilizers. Question: Is B2 2-a Paramagnetic or Diamagnetic ? This reaction can be described as the chemical reaction which occurs between an acid and a base resulting in a salt and a water molecule. 11 Uses of Platinum Laboratory, Commercial, and Miscellaneous, CH3Br Lewis Structure, Geometry, Hybridization, and Polarity. It is odorless with a density of 1.519 gm/cm3, It has a pH value between 4.5 and 6 and its pKa value is 9.24. Bronsted Lowry acid. a. NH_{4}Br b. KCN c. NH_{4}CN d. SrBr_{2} e. NH_{4}ClO_{4} f. LiF g. LiNO_{3}, Classify the compound K_2CO_3 as acidic, basic or neutral. The reaction of a strong acid and weak base results in acidic salt. Insert the equilibrium constant expressions into the Ka expression. 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