Chemistry · 2021
JEE Main · 26 February 2021, Shift 1 · Q57
An exothermic reaction X → Y has an activation energy 30 kJ mol^-1. If energy change Δ E during the reaction is -20 kJ, then the activation energy…
An exothermic reaction $\displaystyle \mathrm{X} \rightarrow \mathrm{Y}$ has an activation energy $\displaystyle 30 \mathrm{~kJ} \mathrm{~mol}^{-1}$. If energy change $\displaystyle \Delta \mathrm{E}$ during the reaction is -$\displaystyle 20$ kJ , then the activation energy for the reverse reaction in kJ is
\_\_\_\_. (Integer answer)
Official answer
50
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JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.