Consider the reaction C → D with the following data: Energy of reactants = 30 kJ/mole;
Energy of products = 20 kJ/mole;
Energy of transition state = 60 kJ/mole.
One can say with certainty that the reaction is ________ by ________kJ/mole and the energy of activation is ________ kJ/mole.

Question

Quizplus · Accepted Answer

The reaction is exothermic because the energy of products (20 kJ/mole) is lower than the energy of reactants (30 kJ/mole). The reaction is also releasing energy by 10 kJ/mole (energy of reactants minus energy of products). The energy of activation is the difference between the energy of the transition state and the energy of the reactants (60 kJ/mole - 30 kJ/mole), which is 30 kJ/mole. Therefore, the correct choice is A.

Consider the Reaction C → D with the Following Data