Question

For chemical reactions involving ideal gases, the equilibrium constant K can be expressed either in terms of the concentrations of the gases (in M) or as a function of the partial pressures of the gases (in atmospheres). In the latter case, the equilibrium constant is denoted as Kp to distinguish it from the concentration-based equilibrium constant K.

Part A

For the reaction

2CH4(g)⇌C2H2(g)+3H2(g)

K = 0.155 at 1635 ∘C . What is Kp for the reaction at this temperature?

Express your answer numerically.

Part B

For the reaction

N2(g)+3H2(g)⇌2NH3(g)

Kp = 5.65×10⁻³ at 278 ∘C . What is K for the reaction at this temperature?

Enter your answer numerically.

Answer 1