What happens to the magnitude and sign of the enthalpy change when a process is reversed?

When a process is reversed the sign of a enthalpy change is reversed & magnitude is same.

Explanation:

When process is reversed then Sign of the enthalpy change is also reversed. because when the process is reversed then exothermic process becomes endothermic & endothermic becomes exothermic. So that sign of the enthalpy change for a process is reversed & magnitude is constant in both cases.

Therefore when a process is reversed the sign of a enthalpy change is reversed & magnitude is same.

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