Question 7
The correct choice is:
More bond energy is absorbed on the reactants side than is released on the products side.
Since the reaction is described as an endothermic one, it means that the energy absorbed to break the bonds in hydrochloric acid (HCl) and sodium hydroxide (NaOH) is greater than the energy released when the bonds in water (H2O) and sodium chloride (NaCl) are formed. This indicates a net energy absorption from the surroundings.
Question 8
The correct choice is:
An endothermic reaction.
In the described graph, the reactants start at a certain potential energy, then the energy rises to peak at the activation energy before falling to a lower energy level for the products. Since the products have a lower potential energy than the reactants, this indicates that the reaction might involve some energy absorption. However, since the end state (products) is lower than the peak but does not go below the starting reactant level, it illustrates an overall energy absorption characteristic of endothermic processes.