Chapter 17, Problem 44A

(a)

Interpretation Introduction

Interpretation:

The equilibrium constant expression for the homogenous equation is to determined.

Concept introduction:

The equilibrium constant is the ratio of concentration of products to the concentration of reactants.

Answer to Problem 44A

The equilibrium expression for the given reaction is

${\text{K}}_{\text{eq}}\text{=}\frac{{\left[{\text{N}}_{\text{2}}\right]}^{\text{3}}{\left[{\text{H}}_{\text{2}}\text{O}\right]}^{\text{4}}}{{\left[{\text{N}}_{\text{2}}{\text{H}}_{\text{4}}\right]}^{\text{2}}{\left[{\text{NO}}_{\text{2}}\right]}^{\text{2}}}$

Explanation of Solution

The equilibrium constant is the ratio of concentration of products to the concentration of reactants.

A homogenous equation is that in which reactants and product are in the same phase.

The given reaction is

${\text{2N}}_{\text{2}}{\text{H}}_{\text{4}}\left(\text{g}\right){\text{+2NO}}_{\text{2}}\left(\text{g}\right)\rightleftharpoons {\text{3N}}_{\text{2}}\left(\text{g}\right){\text{+4H}}_{\text{2}}\text{O}\left(\text{g}\right)$

The equilibrium expression for the given reaction is

${\text{K}}_{\text{eq}}\text{=}\frac{{\left[{\text{N}}_{\text{2}}\right]}^{\text{3}}{\left[{\text{H}}_{\text{2}}\text{O}\right]}^{\text{4}}}{{\left[{\text{N}}_{\text{2}}{\text{H}}_{\text{4}}\right]}^{\text{2}}{\left[{\text{NO}}_{\text{2}}\right]}^{\text{2}}}$

(b)

Interpretation Introduction

Interpretation:

The equilibrium constant expression for the homogenous equation is to determined.

Concept introduction:

The equilibrium constant is the ratio of concentration of products to the concentration of reactants

Answer to Problem 44A

The equilibrium expression for the given reaction is:

${\text{K}}_{\text{eq}}\text{=}\frac{{\left[{\text{NbCl}}_{\text{3}}\right]}^{}\left[{\text{NbCl}}_{\text{5}}\right]}{{\left[{\text{NbCl}}_{\text{4}}\right]}^{\text{2}}}$

Explanation of Solution

The equilibrium constant is the ratio of concentration of products to the concentration of reactants.

A homogenous equation is that in which reactants and product are in the same phase.

The given reaction is

${\text{2NbCl}}_{\text{4}}\left(\text{g}\right)\rightleftharpoons {\text{NbCl}}_{\text{3}}\left(\text{g}\right){\text{+NbCl}}_{\text{5}}\left(\text{g}\right)$

The equilibrium expression for the given reaction is

${\text{K}}_{\text{eq}}\text{=}\frac{{\left[{\text{NbCl}}_{\text{3}}\right]}^{}\left[{\text{NbCl}}_{\text{5}}\right]}{{\left[{\text{NbCl}}_{\text{4}}\right]}^{\text{2}}}$