1. Tardigrade
  2. Question
  3. Chemistry
  4. An exothermic reaction, A arrow B , has an activation energy of 15kcalmol- 1 and the energy of reaction is 5kcalmol- 1 . The activation energy in kcalmol- 1 for the reaction, B arrow A is

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Q. An exothermic reaction, $A \rightarrow B$ , has an activation energy of $15kcalmol^{- 1}$ and the energy of reaction is $5kcalmol^{- 1}$ . The activation energy in $kcalmol^{- 1}$ for the reaction, $B \rightarrow A$ is

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Solution:

Solution
$\left( E _{ a }\right)_{ r }=\left( E _{ a }\right)_{ f }-\Delta E =15 kcal mol ^{-1}-\left(-5 kcalmol ^{-1}\right)$ $=20 kcal mol ^{-1}$.