Chapter 12, Problem 57QRT

(a)

Interpretation Introduction

Interpretation:

The final concentrations of all four species ${\text{CO, H}}_{\text{2}}{\text{O, CO}}_{\text{2}}$ and ${\text{H}}_{\text{2}}$ 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 equilibrium concentrations of all species after the addition of an additional $\text{1}\text{.00 mol}$ each of ${\text{CO and H}}_{\text{2}}\text{O}$ to the flask has to be calculated.

Concept Introduction:

Refer part (a).