Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Chemical Kinetics

Question:

Observe the given graph. What will be the unit for the rate constant?

Options:

mol L-1 s-1

mol-1 L s-1

s-1

mol-2 L2 s-1

Correct Answer:

s-1

Explanation:

Plot of log\(\frac{[R]_0}{[R]}\) vs time for a first order reaction.

Unit of rate constant = (mol)1-n(L)n-1s-1 where n is the order of reaction.

For first order reaction, n = 1

Unit of rate constant = s-1