Question:
The equation for the rate constant is \(k = Ae^{-E_a/RT}\).
A chemical reaction will proceed more rapidly if there is a decrease in
The equation for the rate constant is \(k = Ae^{-E_a/RT}\).
A chemical reaction will proceed more rapidly if there is a decrease in
A chemical reaction will proceed more rapidly if there is a decrease in
Show Hint
A lower activation energy makes the exponential term larger.
Updated On: Oct 1, 2026
- \(k\)
- \(A\)
- \(E_a\)
- \(T\)
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The Correct Option is C
Solution and Explanation
Step 1: Study the equation
\(k = Ae^{-E_a/RT}\). A larger \(k\) means a faster reaction.
Step 2: Effect of each factor
Decreasing \(E_a\) makes the exponent less negative, so the exponential term and \(k\) increase. So the reaction goes faster.
Decreasing \(k\) obviously slows the reaction. Decreasing \(A\) lowers \(k\). Decreasing \(T\) makes the exponent more negative, so \(k\) falls.
Final Answer:
A decrease in activation energy speeds up the reaction. \[ \boxed{\text{(C)}\ E_a} \]
\(k = Ae^{-E_a/RT}\). A larger \(k\) means a faster reaction.
Step 2: Effect of each factor
Decreasing \(E_a\) makes the exponent less negative, so the exponential term and \(k\) increase. So the reaction goes faster.
Decreasing \(k\) obviously slows the reaction. Decreasing \(A\) lowers \(k\). Decreasing \(T\) makes the exponent more negative, so \(k\) falls.
Final Answer:
A decrease in activation energy speeds up the reaction. \[ \boxed{\text{(C)}\ E_a} \]
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