Question

Which of the following statements is NOT true about the rate constant?

• A. It is proportionality constant in rate law that relates reaction rate to reactant concentrations.
• B. It is independent of concentration of reactant.
• C. It varies with temperature.
• D. Greater the value of rate constant slower is the reaction.

Hint:

A larger rate constant means a faster reaction, not a slower one.

Answer 1

The Correct Option is D

Step 1: Use rate = $k$ times concentrations
If $k$ is larger, the rate is larger at the same concentrations. So (D) states the reverse. It is the statement that is NOT true.

Final Answer:
Option (D). \[ \boxed{\text{(D)}} \]