Consider the gas-phase reaction:

N2 (g) + 3H2 (g) ⇆ 2NH3 (g)

, for which Kp = 43 at 400 K.

If the mixture is analyzed and found to contain 0.18 bar of N2, 0.36 bar of H2 and 0.59 bar of NH3, describe the situation:

a) Q > K and more products will be made to reach equilibrium.

b) Q < K and more reactants will be made to reach equilibrium.

c) Q < K and more products will be made to reach equilibrium.

d) Q > K and more reactants will be made to reach equilibrium.

e) Within 1 decimal place, Q = K and the reaction is at equilibrium.

Question

Chemistry

Kash

13 June, 15:37

Consider the gas-phase reaction:

N2 (g) + 3H2 (g) ⇆ 2NH3 (g)

, for which Kp = 43 at 400 K.

If the mixture is analyzed and found to contain 0.18 bar of N2, 0.36 bar of H2 and 0.59 bar of NH3, describe the situation:

a) Q > K and more products will be made to reach equilibrium.

b) Q < K and more reactants will be made to reach equilibrium.

c) Q < K and more products will be made to reach equilibrium.

d) Q > K and more reactants will be made to reach equilibrium.

e) Within 1 decimal place, Q = K and the reaction is at equilibrium.

+3

Answers (1)

Know the Answer?

Erick Bennett · Answer 1

Q < K and more products will be made to reach equilibrium (option C)

Explanation:

Step 1: Data given

Kp = 43 at 400 K

pressure of N2 = 0.18 bar

Pressure of H2 = 0.36 bar

Pressure of NH3 = 0.59 bar

Step 2: The balanced equation

N2 (g) + 3 H2 (g) 2 NH3 (g),

Step 3: Calculate Q

Kp = 43 = [NH3]² / [N2] [H2]³

Q = [NH3]² / [N2] [H2]³

Q = [0.59]² / [0.18] [0.36]³

Q = 0.3481 / 0.00839808

Q = 41.45

Q < Kp

When Q
Option C is correct (Q < K and more products will be made to reach equilibrium)