Question:
Which of the following statements is NOT true about the rate constant?
Which of the following statements is NOT true about the rate constant?
Show Hint
A larger rate constant means a faster reaction, not a slower one.
Updated On: Oct 1, 2026
- It is proportionality constant in rate law that relates reaction rate to reactant concentrations.
- It is independent of concentration of reactant.
- It varies with temperature.
- Greater the value of rate constant slower is the reaction.
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The Correct Option is D
Solution and Explanation
Step 1: Recall the meaning
In the rate law \(r=k[A]^n\), \(k\) is the proportionality constant. It does not depend on concentration but changes with temperature.
Step 2: Check the options
(A), (B) and (C) are true.
(D) is false: for the same concentrations a larger \(k\) gives a larger rate, so the reaction is faster.
Final Answer:
Statement (D) is not true, option (D). \[ \boxed{\text{(D)}} \]
In the rate law \(r=k[A]^n\), \(k\) is the proportionality constant. It does not depend on concentration but changes with temperature.
Step 2: Check the options
(A), (B) and (C) are true.
(D) is false: for the same concentrations a larger \(k\) gives a larger rate, so the reaction is faster.
Final Answer:
Statement (D) is not true, option (D). \[ \boxed{\text{(D)}} \]
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