Chapter 12, Problem 55QRT

(a)

Interpretation Introduction

Interpretation:

The amount of $\text{HI}$ produced in the given reaction, ${\text{H}}_{\text{2(g)}}{\text{ + I}}_{\text{2(g)}}\rightleftharpoons {\text{2HI}}_{\text{(g)}}$ 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,

  $\text{aA+bB}\rightleftarrows \text{cC+dD}$

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

The concentration of solids and pure liquids do not change, so their concentration terms are not included in the equilibrium constant expression.

(b)

Interpretation Introduction

Interpretation:

The amount of $\text{HI}$ produced in the given reaction, ${\text{H}}_{\text{2(g)}}{\text{ + I}}_{\text{2(g)}}\rightleftharpoons {\text{2HI}}_{\text{(g)}}$ for a $\text{5}\text{.00 L}$ flask has to be calculated.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

The amount of $\text{HI}$ produced at equilibrium when additional $\text{3}\text{.00 mol}$ ${\text{H}}_{\text{2}}$ is added to the $\text{10}\text{.00 L}$ flask has to be calculated.

Concept Introduction:

Refer part (a)