Concept explainers
Interpretation: The products of the combustion of methane possess total potential energy than do the reactants needs to be explained.
Concept Introduction: In an exothermic reaction energy discharges from the system while in endothermic reaction consumed energy from the surrounding. Chemical energy is the type of potential energy that stores energy in
Answer to Problem 13A
In exothermic reaction the reactants have lower potential energy. As energy flows out from system to surrounding.
Explanation of Solution
Since, the total energy is conserved and that energy flows from the system into surrounding in exothermic reaction. In the combustion of methane, the burned methane lost potential energy. In this case potential energy is stored in the bonds of the reactant.
During the exothermic reaction, the energy that the surrounding gains must be equal to the energy that the system has lost.
Chapter 10 Solutions
World of Chemistry, 3rd edition
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