JEE Main · ChemistryHard
A first order reaction has a rate constant . If the reaction is carried out in a solvent where the activation energy is lowered by at , by what factor does the rate constant increase? (Use )
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: B —
Solution
- The Arrhenius equation is .
- The ratio of rate constants is .
- Substitute values: , , .
- The exponent is .
- Hence the answer is (B).
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