Complete the enthalpy diagram for the reaction between nitrogen and hydrogen to form ammonia. Label the activation energy with and without a catalyst, and the enthalpy change of reaction.

Haber process is an exothermic reaction - products are of a lower energy than reactants, net energy has been released Activation energy curves should be drawn from the reactions up in a peak, down to the productsActivation energy should be labelled as the energy change from the reactants to the peak of the curve Activation energy with a catalyst (Ec) should have a smaller peak/lower energy than activation energy without a catalyst (Ea)Enthalpy change should be a straight arrow from the reactants down to the products