Chapter 15, Problem 6SAQ

The equilibrium constant for this reaction is $K_{eq}=1.0\times {10}^3$. The reaction mixture at equilibrium contains $\left[\text{A}\right]=1.0\times {10}^{-3}\text{M}$. What is the concentration of B in the mixture?

$\text{A}(s)\rightleftharpoons \text{B}(g)$

a. $1.0\times {10}^{-3}\text{M}$

b. 1.0 M

c. 2.0 M

d. $1.0\times {10}^3\text{M}$