Assuming that water vapour is an ideal gas, the internal energy change `(DeltaU)` when 1 mole of water is vaporised at `1 ba r` pressure and` 100^(@)C, (` given`:` molar enthalpy of vaporization of water `41kJ mol^(-1)` at `1 ba r` and `373 K ` and `R=8.3 J mol^(-1)K^(-1))` will be `:`A. `41 kJ mol^(-1)`B. `4.1 kJ mol^(-1)`C. `3.7904 kJ mol^(-1)`D. `37.904 kJ mol^(-1)`

Assuming that water vapour is an ideal gas, the internal energy change

1.	Assuming that water vapour is an ideal gas, the internal energy change `(DeltaU)` when 1 mole of water is vaporised at `1 ba r` pressure and` 100^(@)C, (` given`:` molar enthalpy of vaporization of water `41kJ mol^(-1)` at `1 ba r` and `373 K ` and `R=8.3 J mol^(-1)K^(-1))` will be `:`A. `41 kJ mol^(-1)`B. `4.1 kJ mol^(-1)`C. `3.7904 kJ mol^(-1)`D. `37.904 kJ mol^(-1)`
Answer» Correct Answer - D `DeltaH=DeltaU+Delta nRT`

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