Question

A potential energy diagram is shown.

Answer 1

Answer:

the activation energy would be 200 kJ since we are looking an endothermic reaction.

Explanation:

Answer 2

Answer: 50 kJ

Explanation: In the potential energy diagram, the energy level of reactants is 150 kJ. The energy level of activated complex(peak) is 200 kJ and the energy level of products is 50 kJ.

The difference in energy of products and reactants is known as enthalpy of reaction. Energy level of products is lower than reactants and it indicates an exothermic reaction.

Enthalpy of reaction  = 50 kJ - 150 kJ = -100 kJ

The difference in energy of activated complex and reactants is known as Activation energy.

Since the activated complex energy is 200 kJ and reactants energy is 150 kJ.

Activation energy = 200 kJ - 150 kJ = 50 kJ

Hence, the activation energy of the reaction is 50 kJ.