   Chapter 14, Problem 32Q

Chapter
Section
Textbook Problem

# Consider a 0.10-M H2CO3 solution and a 0.10-M H2SO4 solution. Without doing any detailed calculations, choose one of the following statements that best describes the [H+] of each solution and explain your answer.a. The [H+] is less than 0.10 M.b. The [H+] is 0.10 M.c. The [H+] is between 0.10 M and 0.20 M.d. The [H+] is 0.20M.

Interpretation Introduction

Interpretation: The statement that best describes the [H+] of each of the given solution is to be identified and explained.

Concept introduction: A strong acid dissociates completely in water, whereas a weak acid does not dissociate completely in water.

To Identify: The statement that best describes the [H+] of each of the given solution from the given list.

Explanation

Explanation

The given acid, H2SO4 is a strong acid. A strong acid completely dissociates its the corresponding ions, in water.

Sulfuric acid (H2SO4) completely dissociates into 2H+ and SO42 .

Two H+ ions are formed in the dissociation of H2SO4 .

Hence, the [H+] =(2×0.10)M=0.20M

The given acid, H2CO3 is a weak acid. A weak acid does not completely dissociate into its corresponding ions, in water.

Carbonic acid (H2CO3) dissociates into H+ and HCO3

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