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Consider the given plot of enthalpy of the following reaction between A and B. A + B → C + D. Identify the incorrect statement. 20 15 10 5 A+B C D Reaction Coordinate Enthalpy (kJ mol –1 )

1. C is the thermodynamically stable product.
2. Formation of A and B from C has highest enthalpy of activation.
3. Activation enthalpy to form C is 5 kJ mol –1 less than that to form D.
4. D is kinetically stable product.

Correct answer: Activation enthalpy to form C is 5 kJ mol –1 less than that to form D.

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