1) Consider the water gas equilibrium reaction, $C(s)+H_{2}O(g)\rightleftharpoons CO(g)+H_{2}(g)$ which of the following statement is true at equilibrium? A) If the amount of C(s) is increased, less water would be formed B) If the amount of C(s) is increased, more CO and $H_{2}$ would be formed C) If the pressure on the system is increased by halving the volume, more water would be formed D) If the pressure on the system is increased by halving the volume , more CO and $H_{2}$ would be formed Answer: Option CExplanation:$K=\frac{[CO(g)][H_{2}(g)]}{[H_{2}O(g)]}$ Concentration will increase, on halving the volume. There are two terms in numerator. So to keep K constant, the concentration of [H2 O] should increase much more.
