Question

In the reaction C(s) + CO2(g) 2CO(g), the equilibrium pressure is 12 atm. If 50% of CO2 reacts then Kp will be :

• A. 12 atm
• B. 16 atm
• C. 20 atm
• D. 24 atm

Answer 1

Answer: (B)

16 atm

Answer 2

C(s) + CO2(g) $\rightleftharpoons$ 2CO(g)

P–P/2 P = $\frac{3P}{2}$ = 12

so, KP = $\frac{P^{2}}{(P/2)}$ = 2P = 2 × 8 = 16 atm.C