Question

Explain why the H f for water is identical to the standard enthalpy change of combustion of hydrogen.

Answer 1

Answer:

H1 is the initial enthalpy of the system (in a chemical reaction, the enthalpy of the reactants). For an exothermic reaction at constant pressure, the system's change in enthalpy equals the energy released in the reaction, including the energy retained in the system and lost through expansion against its surroundings.

Explanation:

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Answer 2

Answer:

H1 is the initial enthalpy of the system (in a chemical reaction, the enthalpy of the reactants). For an exothermic reaction at constant pressure, the system's change in enthalpy equals the energy released in the reaction, including the energy retained in the system and lost through expansion against its surroundings.