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Chemistry: Principles and Reactions

8th Edition
William L. Masterton + 1 other
ISBN: 9781305079373

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BuyFindarrow_forward

Chemistry: Principles and Reactions

8th Edition
William L. Masterton + 1 other
ISBN: 9781305079373
Textbook Problem

Given the following descriptions of reversible reactions, write a balanced net ionic equation (simplest whole-number coefficients) and the equilibrium constant expression (K) for each.

(a) Liquid acetone (C3H6O) is in equilibrium with its vapor.

(b) Hydrogen gas reduces nitrogen dioxide gas to form ammonia and steam.

(c) Hydrogen sulfide gas (H2S) bubbled into an aqueous solution of lead(ll) ions produces lead sulfide precipitate and hydrogen ions.

Interpretation Introduction

(a)

Interpretation:

A balanced chemical equation for the given description and the equilibrium constant for the expression should be determined.

Concept introduction:

For a general equilibrium reaction as follows:

aA+bBcC+dD

The expression for equilibrium constant of a reaction can be calculated as follows:

K=[C]c[D]d[A]a[B]b

Here, A and B are reactants with stoichiometric coefficient a and b respectively. Similarly, C and D are products with stoichiometric coefficient c and d respectively

In the expression for equilibrium constant, the species in pure solid and liquid state are not written as equilibrium constant does not depend on them.

Explanation

According to the given description, the liquid acetone, C3H6O(l) is in equilibrium with its vapor state.

The reaction can be written as follows:

C3H6O(l)

Interpretation Introduction

(b)

Interpretation:

A balanced chemical equation for the given description and the equilibrium constant for the expression should be determined.

Concept introduction:

For a general equilibrium reaction as follows:

aA+bBcC+dD

The expression for equilibrium constant of a reaction can be calculated as follows:

K=[C]c[D]d[A]a[B]b

Here, A and B are reactants with stoichiometric coefficient a and b respectively. Similarly, C and D are products with stoichiometric coefficient c and d respectively

In the expression for equilibrium constant, the species in pure solid and liquid state are not written as equilibrium constant does not depend on them.

Interpretation Introduction

(c)

Interpretation:

A balanced chemical equation for the given description and the equilibrium constant for the expression should be determined.

Concept introduction:

For a general equilibrium reaction as follows:

aA+bBcC+dD

The expression for equilibrium constant of a reaction can be calculated as follows:

K=[C]c[D]d[A]a[B]b

Here, A and B are reactants with stoichiometric coefficient a and b respectively. Similarly, C and D are products with stoichiometric coefficient c and d respectively

In the expression for equilibrium constant, the species in pure solid and liquid state are not written as equilibrium constant does not depend on them.

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