Chapter 15, Problem 8SAQ

Interpretation Introduction

Interpretation:

Consider the reaction A to from B 2A(g)⇄B(g) K_c =1.8×10⁻⁵ (at 298 K) reaction reaches equilibrium. Concentration of B at equilibrium should be determined.

Concept introduction:

For the reaction type:

xA+yB⇄mC+nD

where A, B, C and D represent chemical species and x, y, m and n are coefficients of the balanced chemical equation. The equilibrium constant for such reactions are given as:

${\text{K}}_{\text{a}}=\frac{{\left[\text{C}\right]}^{\text{m}}{\left[\text{D}\right]}^{\text{n}}}{{\left[\text{A}\right]}^{\text{x}}{\left[\text{B}\right]}^{\text{y}}}$

The square brackets represent concentration of the species in equilibrium.

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