Question

The change in enthalpy for the reaction A - Pis x kJ/mol. What does the enthalpy
change for the reaction P → A?​

Answer 1

Explanation:

The change in enthalpy for the reaction A - Pis x kJ/mol. What does the enthalpy

change for the reaction P → A?

Answer 2

Answer:

The enthalpy change for the reaction P - A is -x kJ

That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions. For the reverse reaction, the enthalpy would remain same but the sign of enthalpy would change.