Question

re is an energy diagram for the reaction: use the energy diagram to answer these questions. what is the heat of reaction? kj/mol exothermic

Explanation:

Step1: Identify energy levels

From the diagram, the energy of reactants (A + B) is 300 kJ/mol, and the energy of products (C + D) is 100 kJ/mol.

Step2: Calculate heat of reaction

Heat of reaction ($\Delta H$) is products' energy minus reactants' energy: $\Delta H = 100 - 300 = -200$ kJ/mol.

Answer:

-200