For A₂+B₂ ⇌ 2AB Eₐ for forward and backward reaction are 180 kJ mol⁻¹ and 200 kJ mol⁻¹ respectively. If cataly…

Question

For $$\mathrm{A}_{2}+\mathrm{B}_{2} ightleftharpoons 2\mathrm{AB}$$ $$\mathrm{E}_{\mathrm{a}}$$ for forward and backward reaction are **$$180 \, 	ext{kJ mol}^{-1}$$** and **$$200 \, 	ext{kJ mol}^{-1}$$** respectively. If catalyst lowers $$\mathrm{E}_{\mathrm{a}}$$ for both reaction by **$$100 \, 	ext{kJ mol}^{-1}$$**. Which of the following statement is correct?

Accepted Answer

A. Catalyst does not alter the Gibbs energy change of a reaction.

Answer

B. Catalyst can cause non-spontaneous reactions to occur.

Answer

C. The enthalpy change for the reaction is $$+20 \, 	ext{kJ mol}^{-1}$$.

Answer

D. The enthalpy change for the catalysed reaction is different from that of uncatalysed reaction.

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