An exothermic...

Question

An exothermic chemical reaction proceeds by two stages:
$Reactants stage 1 \to Intermediate stage 2 \to Products$
The activation energy of stage 1 is $50 kJ/mol$ . The overall enthalpy change of the reaction is $- 100 kJ/mol$ . Which diagram could represent the energy level diagram for the other reaction.

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Solution

The correct option is B
Since this is a multistep reaction, there would be two activated complexes formed. Also, since the total enthalpy change is negative, the products would be at a lower energy than the reactants. Keeping these ideas in mind, option c fits the description of the process.

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An exothermic chemical reaction proceeds by two stages: Reactantsstage 1→Intermediatestage 2→Products The activation energy of stage 1 is 50 kJ/mol. The overall enthalpy change of the reaction is −100 kJ/mol. Which diagram could represent the energy level diagram for the other reaction.

The correct option is B Since this is a multistep reaction, there would be two activated complexes formed. Also, since the total enthalpy change is negative, the products would be at a lower energy than the reactants. Keeping these ideas in mind, option c fits the description of the process.

The correct option is B
Since this is a multistep reaction, there would be two activated complexes formed. Also, since the total enthalpy change is negative, the products would be at a lower energy than the reactants. Keeping these ideas in mind, option c fits the description of the process.