Question

Show that the change in enthalpy of a system is equal to heat transferred from it at constant pressure​

Answer 1

Enthalpy is a intensive property of the material that has nothing to do with the specific process that the material is subjected to. It just so happens in a constant pressure condition, involving only P-V work, that the change in enthalpy is equal to the heat added.

Enthalpy is a intensive property of the material that has nothing to do with the specific process that the material is subjected to. It just so happens in a constant pressure condition, involving only P-V work, that the change in enthalpy is equal to the heat added.If non expansion work is done on the system, then ∆H≠Qp. It should be mentioned while writing '∆H = ∆U + p∆V =Qp', that 'it is applicable when only p-V work is done'.

Hope this helps you....!!