Question

The activation energy for the reaction NO₂(g)+CO(g)⟶NO(g)+CO₂(g) is 125kJ/mol, and ΔE for the reaction is −216kJ/mol. What is the activation energy for the reverse reaction [NO(g)+CO₂(g)⟶NO₂(g)+CO(g)]?

Answer 1

The activation energy for the reverse reaction is -91 kJ/mol.

Step-by-step explanation:

The activation energy for the reverse reaction can be determined using the relationship between activation energies for the forward and reverse reactions:

∆E (reverse) = ∆E (forward) + Activation energy (forward)

Plugging in the values, we get:

Activation energy (reverse) = -216kJ/mol + 125kJ/mol = -91 kJ/mol

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