Q1. The answer is (B).
The relation between Kp and Kc is:
Kp = Kc (RT)∆n
where ∆n is the difference in the number of moles of gaseous products and gaseous reactants.
In this reaction, ∆n = 2 - (1 + 3) = -2
So, Kp = Kc (RT)-2
Kp = (1.44 × 10-5) (0.0821 × 400)-2 = 3.1.
Q2. A mixture of 1.0 mole of CO and 1.0 mole of H2, in a 1.0 L flask, is heated to 727 °C. At equilibrium, the concentration of CO is 0.25 M. What is the equilibrium concentration of H2?
The answer is 1.75 M.
The balanced reaction equation is:
CO(g) + H2(g) ⇌ CO2(g) + H2(g)
The equilibrium constant expression is:
Kc = [CO2][
