select the true statement about the diagram. it shows an exothermic overall reaction. it represents only one…

select the true statement about the diagram. it shows an exothermic overall reaction. it represents only one reaction. it shows the energy level of the reaction system. retry

select the true statement about the diagram. it shows an exothermic overall reaction. it represents only one reaction. it shows the energy level of the reaction system. retry

Answer

Brief Explanations:

  1. An exothermic reaction has a negative $\Delta H_{rxn}$. Here, since the products are at a lower energy level than the reactants (as indicated by the downward - pointing $\Delta H_{rxn}$ arrow), it is an exothermic overall reaction.
  2. The diagram likely represents a multi - step reaction process as there are multiple $\Delta H$ values ($\Delta H_1$, $\Delta H_2$, $\Delta H_3$), not just one reaction.
  3. While it shows changes in energy levels related to the reaction, the statement "It shows the energy level of the reaction system" is too general. The key aspect is the exothermic nature shown by the overall $\Delta H_{rxn}$.

Answer:

It shows an exothermic overall reaction.