For the reversible reaction A + B ⇌ C + D, the enthalpy change of the forward reaction is +21 kJ/mol. The activation energy of the forward reaction is 84 kJ/mol.

(a) What is the activation energy of the reverse reaction?

(b) In the manner of Figure 20-10, sketch the reaction profile of this reaction.

Figure 20-10

Transcribed Image Text:

NNO Potential energy, kJ mol-¹ E (forward) 209 kJ mol-¹ NN Reactants •N₂O(g) + NO(g) Transition state ↑ AH-139 kJ mol-¹ E (reverse) = 348 kJ mol-¹ Reaction progress Products N₂(g) + NO₂(g)