Question:medium
The rate constants of a reaction at $300,K$ and $400,K$ are $1.5,s^{-1}$ and $3,s^{-1}$ respectively. The $E_a$ value is [$\log 2 = 0.3010,\ 2.303R=19,J,K^{-1}mol^{-1}$]
The rate constants of a reaction at $300,K$ and $400,K$ are $1.5,s^{-1}$ and $3,s^{-1}$ respectively. The $E_a$ value is [$\log 2 = 0.3010,\ 2.303R=19,J,K^{-1}mol^{-1}$]
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Chemistry Tip: If rate constant doubles with temperature increase, use $\log(k_2/k_1)=\log 2$ immediately to save time.
Updated On: Apr 27, 2026
- $7.86,kJ$
- $68.6,kJ$
- $78.6,kJ$
- $6.86,kJ$
- $5.86,kJ$
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The Correct Option is D
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