Question:
The rate constant of a chemical reaction depends upon which of the following?
The rate constant of a chemical reaction depends upon which of the following?
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A rise of about \(10^\circ\)C often doubles the rate of many reactions due to the exponential \(k(T)\) dependence.
Updated On: Oct 14, 2025
- Temperature
- Mass
- Weight
- Time
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The Correct Option is A
Solution and Explanation
Step 1: Arrhenius dependence.
The rate constant \(k\) varies with temperature as \(k = A e^{-E_a/RT}\). Hence \(k\) primarily depends on temperature.
Step 2: Eliminate others.
Mass, weight, and time do not directly determine the value of \(k\) (for a given reaction and medium).
Step 3: Conclusion.
Therefore, the correct answer is (A) Temperature.
The rate constant \(k\) varies with temperature as \(k = A e^{-E_a/RT}\). Hence \(k\) primarily depends on temperature.
Step 2: Eliminate others.
Mass, weight, and time do not directly determine the value of \(k\) (for a given reaction and medium).
Step 3: Conclusion.
Therefore, the correct answer is (A) Temperature.
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