Question

For a onestep reaction, the activation energy for the forward reaction is40.0 kJ mol^-1, and the enthalpy ofreaction is -20.0 kJ mol^-1. Which statement belowis true?

The value for the enthalpy of reaction would be decreased byaddition of a catalyst.

The reaction is endothermic.

The activation energy of the forward reaction would be affected toa greater extent than the activation energy of the reverse reactionby addition of a catalyst.

The reverse reaction has a higher activation energy than theforward reaction.

The reaction rate would be decreased by an increase intemperature.