Q18.13P Question: Use Appendix C to rank... [FREE SOLUTION]

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Chapter 18: Q18.13P (page 823)

Question: Use Appendix C to rank the following in order of increasing acid strength: ${HIO}_{3} {, HI, CH}_{3} COOH, HF$ .

Short Answer

Expert verified

The order of compounds in increasing acidic strength is

$C H_{3} C O O H (1.8 脳 10^{- 5}) < H F (6.8 脳 10^{- 4}) < H I O_{3} (1.6 脳 10^{- 1}) < H I$

Step by step solution

Concept Introduction

The ability of an acid to lose its $H^{+}$ ion is measured by its acid strength. A strong acid ionises completely in a solution, whereas a weak acid only ionises partially.

Ranking of compounds in order of Increasing Acid Strength

First, list the $K_{a}$ values of the following compounds from appendix C 鈥�

${HIO}_{3} {, HI, CH}_{3} COOH, HF$

Compound	$K_{a}$
${HIO}_{3}$	$1.6 脳 10^{- 1}$
HI	-
${CH}_{3} COOH$	$1.8 脳 10^{- 5}$
HF	$6.8 脳 10^{- 4}$

To rank the compounds in order of increasing acid strength, rank them in order of increasing $K_{a}$ . The $K_{a}$ of HI is not given in Appendix Cbecause it is known that it is the only strong acid and the rest are classified asweak acid. So, it will be ranked last (highest acid strength).

The order is as follows 鈥�

role="math" localid="1663304045665" $1.8 脳 10^{- 5} < 6.8 脳 10^{- 4} < 1.6 脳 10^{- 1} < H I$

$C H_{3} C O O H < H F < H I O_{3} < H I$

Therefore, the ranking order is $C H_{3} C O O H < H F < H I O_{3} < H I$ .

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91影视

Question: Use Appendix C to rank the following in order of increasing acid strength: ${HIO}_{3} {, HI, CH}_{3} COOH, HF$ .

Short Answer

Step by step solution

Concept Introduction

Ranking of compounds in order of Increasing Acid Strength

One App. One Place for Learning.

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91影视

Question: Use Appendix C to rank the following in order of increasing acid strength: HIO3, HI, CH3COOH, HF .

Short Answer

Step by step solution

Concept Introduction

Ranking of compounds in order of Increasing Acid Strength

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Making Measurements

Nuclear Chemistry

The Earths Atmosphere

Physical Chemistry

Chemical Analysis

Ionic and Molecular Compounds

Study anywhere. Anytime. Across all devices.

Question: Use Appendix C to rank the following in order of increasing acid strength: ${HIO}_{3} {, HI, CH}_{3} COOH, HF$ .