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The enthalpy of vapourisation of liquid ...

The enthalpy of vapourisation of liquid water using the data :
`H_(2)(g)+1//2O_(2)(g)rarr H_(2)O(l) , Delta =-285.77 KJ mol^(-1)`
`H_(2)(g)+1//2O_(2)(g)rarr H_(2)O(g) , Delta H=-241.84 KJ mol^(-1)`

A

`+43. 93 kj// mo`

B

`-43.93 kJ// mol`

C

`+527.61 kJ// mol`

D

`-527.61 kJ// mol`

Text Solution

Verified by Experts

The correct Answer is:
A
`H_(2)O(l)rarrH_(2)O(g)`
`Eq.(ii)-Eq.(i)`
`=-241.84-(-285.77)=43.93KJmol^-1`
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