Chapter 15, Problem 15.56QP

(a)

Interpretation Introduction

Interpretation:

The partial pressures of $\text{NO}\text{and}{\text{Cl}}_{\text{2}}$ has to be calculated using the given data.

Concept Introduction

• Equilibrium constant: at equilibrium the ratio of products to reactants (each raised to the power corresponding to its stoichiometric coefficient) has a constant value, K

For a general reaction, $\text{aA+bB}\underset{}{\rightleftharpoons }\text{cC+dD}$

$\text{Equilibrium}\text{constant}\text{K}\text{=}\frac{{\left[\text{C}\right]}^{\text{c}}{\left[\text{D}\right]}^{\text{d}}}{{\left[\text{A}\right]}^{\text{a}}{\left[\text{B}\right]}^{\text{b}}}$

• Equilibrium constant at constant pressure:$K_p$

It is used to express the relationship between product pressures and reactant pressures.

For a general reaction, $\text{aA+bB}\underset{}{\rightleftharpoons }\text{cC+dD}$

$\text{Equilibrium}\text{constant}{\text{K}}_p\text{=}\frac{P_C{}^{\text{c}}{P}_D{}^{\text{d}}}{P_A{}^{\text{a}}{P}_B{}^{\text{b}}}$

(b)

Interpretation Introduction

Interpretation:

The equilibrium constant, ${\text{K}}_{\text{p}}$ has to be calculated.

Concept Introduction

• Equilibrium constant: at equilibrium the ratio of products to reactants (each raised to the power corresponding to its stoichiometric coefficient) has a constant value, K

For a general reaction, $\text{aA+bB}\underset{}{\rightleftharpoons }\text{cC+dD}$

$\text{Equilibrium}\text{constant}\text{K}\text{=}\frac{{\left[\text{C}\right]}^{\text{c}}{\left[\text{D}\right]}^{\text{d}}}{{\left[\text{A}\right]}^{\text{a}}{\left[\text{B}\right]}^{\text{b}}}$

• Equilibrium constant at constant pressure:$K_p$

It is used to express the relationship between product pressures and reactant pressures.

For a general reaction, $\text{aA+bB}\underset{}{\rightleftharpoons }\text{cC+dD}$

$\text{Equilibrium}\text{constant}{\text{K}}_p\text{=}\frac{P_C{}^{\text{c}}{P}_D{}^{\text{d}}}{P_A{}^{\text{a}}{P}_B{}^{\text{b}}}$