Chapter 14, Problem 14.61QP

The following reaction has an equilibrium constant K_c equal to 4.36 × 10⁻⁴ at 38°C

$2\text{NOBr(}g\text{)}\stackrel{}{\rightleftharpoons }2\text{NO}(g)+{\text{Br}}_2(g)$

For each of the following compositions, decide whether the reaction mixture is at equilibrium. If it is not, decide which direction the reaction should go.

1. a [NOBr] = 0.0720 M, [NO] = 0.0162 M, [Br₂] = 0.0124 M
2. b [NOBr] = 0 121 M, [NO] = 0.0159 M, [Br₂] = 0.0139 M
3. c [NOBr] = 0.103 M, [NO] = 0.0133 M, [Br₂] = 0.0184 M
4. d [NOBr] = 0.0472 M, [NO] = 0.0121 M, [Br₂] = 0.0105 M