🛠️ JEE🧪 Chemistry

For \({\mathrm{A}}_{2}+{\mathrm{B}}_{2}⇌2\mathrm{AB}\) \({\mathrm{E}}_{\mathrm{a}}\) for forward and backward reaction a…

Q1

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

[JEE Main 2025, 4 Apr (Shift 1)]

a

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

b

Catalyst can cause non-spontaneous reactions to occur.

c

The enthalpy change for the reaction is +20 kJ/mol

d

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

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