   Chapter 14, Problem 41E

Chapter
Section
Textbook Problem

# Use Table 13-2 to order the following from the strongest to the weakest acid. HClO 2 ,  H 2 O ,  NH 4 + ,  HClO 4

Interpretation Introduction

Interpretation: The given acids are to be arranged in the decreasing order of their acidic strength on basis of Table 132 .

Concept introduction: A molecule or an ion that is capable of donating a proton or accepting an electron pair in a chemical reaction is known as an acid. The equilibrium constant for the dissociation reaction of a given acid is known as the acid dissociation constant and is denoted by the symbol, Ka .

The acidic strength increases with an increase in the value of Ka .

Explanation

Explanation

To determine: The correct decreasing acidic strength order of the given acids.

The equilibrium constant for the dissociation reaction of a given acid is known as the acid dissociation constant and is denoted by the symbol, Ka .

Refer Table 132 .

The Ka value of HClO2 is 1.2×102 .

The Ka value of NH4+ is 5.6×1010 .

The Ka value of H2O is 1.0×1014 .

The strong acids completely dissociate in water. Therefore, the Ka value of HClO4 is greater than 1

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