Chapter 17.3, Problem 19PP

Interpretation Introduction

Interpretation:

The equilibrium concentrations of the components needs to be calculated.

Concept introduction:

The equilibrium concentrations of the components in a reaction depend on the stoichiometric coefficients of the components.

Answer to Problem 19PP

The equilibrium concentrations of B, C and D are 0.45, 0.55 and 0.55 mol/L respectively. The equilibrium constant is 1.494.

Explanation of Solution

From the equation,

Equilibrium concentration of A = Equilibrium concentration of B

Equilibrium concentration of B = 0.450mol/L

Amount of reactant used = amount of product formed = 1 - 0.45 = 0.55 mol

Equilibrium concentration of C = Equilibrium concentration of D = 0.550 mol/L

Equilibrium constant:

$\begin{array}{l}{K}_{eq}=\frac{[C][D]}{[A][B]}\\ K_{eq}=\frac{0.55*0.55}{0.45*0.45}\\ K_{eq}=1.494\end{array}$

Conclusion

The concentrations of components and K_eq have been calculated.