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Entropy change involve in conversation o...

Entropy change involve in conversation of `1`mole of liquid water at `373K`to vapour at the same temperature (latent heat of vaporisation of water=`2.257kJg^(-1))`

A

`105.9 JK^(-1)`

B

`107.9 JK^(-1)`

C

`108.9JK^(-1)`

D

`109.9JK^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Delta H_("vap") = (2.257 xx 10^(3)J)/((1//18)"mole")`
`Delta S_("vap") = (Delta H_("vap"))/(T) = (2257 J xx 18)/(373 K-"mole") = 108.9 JK^(-1)`
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