Chemistry · 2020
JEE Main · 9 January 2020, Shift 1 · Q29
For following reactions A → 700 K Product; A →[ catalyst ] 500 K Product it was found that the E_a is decreased by 30 kJ/mol in the presence of…
For following reactions
$$\begin{aligned}
& \text { A } \xrightarrow{700 \mathrm{~K}} \text { Product } \\
& \text { A } \xrightarrow[\text { catalyst }]{500 \mathrm{~K}} \text { Product }
\end{aligned}
$$
it was found that the $\displaystyle \mathrm{E}_{\mathrm{a}}$ is decreased by $\displaystyle 30$ kJ/mol in the presence of catalyst. If the rate remains unchanged, the activation energy for catalysed reaction is (Assume pre exponential factor is same) :
Official answer
(3)
$\displaystyle 75$ kJ/mol
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