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What is the change in entropy when 2.5 m...

What is the change in entropy when `2.5` mole of water is heated from `27^(@)C` to `87^(@)C`?
Assume that the heat capacity is constant `(C_(p))_(m)(H_(2)O)=4.2J//g=k,ln(1.2)=0.18)`

A

16.6 J/K

B

9 J/K

C

34.02 J/K

D

1.89 J/K

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaS=nC_(p,m)ln.(T_(2))/(T_(1))`
`=2.5 xx18 xx4.2 ln((360)/(300))`
`34.02 J//K`
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