Standard enthalpy of vapourisation `Delta_("vap")H^(@)` for water at `100^(@)C` si 40.66 kJ `mol^(-1)`. The internal energy of vaporization of water at `100^(@)C` (in kJ `mol^(-1)`) is (Assume water vapour to behave like an ideal gas)A. `+37.56`B. `-43.76`C. `+43.76`D. `+40.66`

Standard enthalpy of vapourisation `Delta_("vap")H^(@)` for water at `

1.	Standard enthalpy of vapourisation `Delta_("vap")H^(@)` for water at `100^(@)C` si 40.66 kJ `mol^(-1)`. The internal energy of vaporization of water at `100^(@)C` (in kJ `mol^(-1)`) is (Assume water vapour to behave like an ideal gas)A. `+37.56`B. `-43.76`C. `+43.76`D. `+40.66`
Answer» Correct Answer - A `DeltaH=DeltaE+Deltan(g)RT` `40.66xx1000=DeltaE+(1)xx8.314xx373` `DeltaE=37.56 kJ mol^(-1)`

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