QJEEM05Chc93a: JEE Main 2005 Chemistry - Class 11 JEEM05Chc93a Solution: Consider an endothermic reaction, X Y with the activation…

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Consider an endothermic reaction, X

\to

Y with the activation energies E_b and E_f for the backward and forward reactions, respectively. In general :

Accepted Answer

Enthalpy of reaction

\left( {\Delta H} \right) = {E_{{a_{\left( f \right)}}}} - {E_{{a_{\left( b \right)}}}}

for an endothermic reaction

\Delta H = + ve

Hence for

\Delta H

to be negative

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{E_{{a_{\left( b \right)}}}} &lt; {E_{{a_{\left( f \right)}}}}

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