Given: 2P(g) + 3Cl₂(g) ? 2PCl₃(g)
K = 15.0
PCl₃(g) + Cl₂(g) ? PCl₅(g)
K = 4.0
What is the value of the equilibrium constant for the reaction below?
2P(g) + 5Cl₂(g) ? 2PCl₅(g)

Question

Given: 2P(g) + 3Cl₂(g) ? 2PCl₃(g) K = 15.0 PCl₃(g)+ Cl₂(g) ? PCl₅(g) K = 4.0 What is the value of the equilibrium constant for the reaction below? 2P(g)+ 5Cl₂(g) ? 2PCl₅(g)

Quizplus · Accepted Answer

To find the equilibrium constant for the given reaction, we can use the law of mass action:

K = ([PCl3]^2 ([Cl2]^5) / ([P2]^2)

Plugging in the given equilibrium constants,

K = (15)^2 (4) / 1 = 900 / 1 = 900

Therefore, the equilibrium constant for the given reaction is 900, which corresponds to answer choice B.

Given: 2P(g) + 3Cl2(g)? 2PCl3(g)

Given: 2P(g) + 3Cl₂(g)? 2PCl₃(g)