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The energies of activation for forward ...

The energies of activation for forward and reverse reaction for `A_(2)+B_(2) hArr 2AB` are `180 kJ "mol"^(-1)` and `200 kJ "mol"^(-1)` respectively. The presence of catalyst lowers the activation energy of both (forward and reverse) reactions by `100 kJ "mol"^(-1)`. The enthalpy change of the reaction `(A_(2) + B_(2) rarr 2 AB)` in the presence of catalyst will be (in `kJ "mol"^(-1)`):

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The energies of activation for forward and reverse reactions for A_(2)+B_(2) rarr 2AB are 180 kJ mol^(-1) and 200 kJ mol^(-1) respectively. The presence of a catalyst lowers the activations by 100 kJ mol^(-1) . The enthalpy change of the reaction (A_(2)+B_(2) rarr 2AB ) in the presence of catalyst will be (in kJ "mol"^(-1)) :

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