JEE Main 2026 — Chemical Kinetics Question with Solution
JEE Main 2026 (24 January Shift 1)
Question
At in presence of a catalyst, activation energy of a reaction is lowered by . The logarithm of ratio of is....
(Consider that the frequency factor for both the reactions is same)
(Consider that the frequency factor for both the reactions is same)
Choose an option
Show full solutionCorrect option: A
Correct answer
A1.741
Step-by-step explanation
Using the Arrhenius equation:
The ratio of rate constants is:
Since the catalyst lowers activation energy by 10 kJ/mol: kJ/mol = 10000 J/mol
At T = 27°C = 300 K, R = 8.314 J/(mol·K):
Taking logarithm base 10:
The ratio of rate constants is:
Since the catalyst lowers activation energy by 10 kJ/mol: kJ/mol = 10000 J/mol
At T = 27°C = 300 K, R = 8.314 J/(mol·K):
Taking logarithm base 10:
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