Question

What happens to the rate of reaction on increasing pressure?

(a) Increases

(b) Decreases

(c) No change

(d) None of the mentioned

The question was asked in homework.

Enquiry is from Kinetic and Thermodynamics of Hydrogenation Reaction topic in division Hydrogenation of Unit Processes

Answer 1

Correct choice is (a) Increases

To elaborate: Pressure, like temperature, can affect the rate of reaction as well as the equilibrium position. The rate of reaction is generally increased by increasing pressure, because a gas phase is usually present, and increased pressure gives increased concentration.