Write the chemical equation for the reaction of carbonic acid (H, CO,) with water and identify the acid dissociation constant expression (acidity constant expression) for this reaction. STRATEGY 1. Write the formula for the conjugate base of carbonic acid. 2. Identify the reactants and the products. 3. Write the Ka expression for a generalized reaction. Steps 1 and 2: The reactants are carbonic acid, H, CO, , and water, H, O. The products are the hydrogen carbonate ion, HCO,, and the hydronium ion, H, O*. Step 3: Write the K, expression for the generalized reaction aA(aq) + bB(1) cC(aq) + dD(aq) Answer Bank K = [A] [D] [B]* [C]* [B] [A]* [C)

Write the chemical equation for the reaction of carbonic acid (H, CO,) with water and identify the acid dissociation constant expression (acidity constant expression) for this reaction. STRATEGY 1. Write the formula for the conjugate base of carbonic acid. 2. Identify the reactants and the products. 3. Write the Ka expression for a generalized reaction. Steps 1 and 2: The reactants are carbonic acid, H, CO, , and water, H, O. The products are the hydrogen carbonate ion, HCO,, and the hydronium ion, H, O. Step 3: Write the K, expression for the generalized reaction aA(aq) + bB(1) cC(aq) + dD(aq) Answer Bank K = [A] [D] [B] [C]* [B] [A]* [C)

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter15: Acid–base Equilibria

Section: Chapter Questions

Problem 85AP

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