The activation energies of forward and backward reaction: ${A_2} + {B_2}\leftrightharpoons2AB$ are 180kJ ${\rm{mo}}{{\rm{l}}^{ - 1}}$ and 200 kJ ${\rm{mo}}{{\rm{l}}^{ - 1}}$ respectively. The presence of a catalyst lowers the activation energy of both (forward and backward) reactions by 100 kJ ${\rm{mo}}{{\rm{l}}^{ - 1}}$. The enthalpy change of the reaction in the presence of catalyst will be (in kJ ${\rm{mo}}{{\rm{l}}^{ - 1}}$):Failed to load question data. Please try again later.
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