Question

the following diagram represents a chemical reaction (the reaction system) and the surrounding environment.
use the diagram to complete the statements.

• the diagram shows that the energy required to break the bonds in the reactants is than the energy released during the formation of products.
• the diagram represents an reaction.
• the diagram shows that, overall, 572 kj of energy is transferred the surroundings. this will result in the surroundings becoming

Explanation:

• For the first statement: In an exothermic reaction, the energy released from bond - forming (in products) is greater than the energy absorbed for bond - breaking (in reactants).
• For the second statement: Since the potential energy of products is lower than that of reactants (\(\Delta H=H_{products}-H_{reactants}<0\)), it is an exothermic reaction.
• For the third statement: In exothermic reactions, energy is transferred to the surroundings. When energy is transferred to the surroundings, the temperature of the surroundings increases.

Answer:

• less
• exothermic
• to; warmer