Chapter 17, Problem 38QAP

. Hydrogen gas, oxygen gas, and water vapor are in equilibrium in a closed container. Hydrogen gas is injected into the container, and the system is allowed to return to equilibrium. Which of the following occurs? Explain your answer.
${\text{2H}}_{\text{2}}\left(g\right)+{\text{O}}_{\text{2}}\left(g\right)\rightleftharpoons {\text{2H}}_{\text{2}}\text{O}\left(g\right)$   a. The concentration of oxygen gas remains constant.
b. The value for K increases.
c. The concentration of oxygen gas increases.
d. The concentration of water vapor increases.
e. The value for K decreases.