Question

For the reaction 2ch4(g)⇌c2h2(g)+3h2(g) k = 0.135 at 1608 ∘c . what is kp for the reaction at this temperature? express your answer numerically.

Answer 1

Answer:

3.3 x 10⁷.

Explanation:

• For the reaction: 2CH₄(g) ⇄ C₂H₂(g) + 3H₂(g),

Kc = 0.135 at 1608 °C.

• To get Kp, we can use the relation:

Kp =Kc(RT)∧Δn.

R is the general gas constant = 8.314 J/mol.K.

T is the temperature of the vessel = 1608 °C + 273 = 1881.0 K.

Δn =  no. of moles of gases in products - no. of moles of gases in the reactants = 4 - 2 = 2.

∴ Kp =Kc(RT)∧Δn = (0.135)[(8.314)(1881.0 K)]² = 3.3 x 10⁷.