Question

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. `16.6J//K`
B. `9 J//K`
C. `34.02J//K`
D. `1.89J//K`

Answer 1

Correct Answer - 3
`DeltaS=nC_(p.m)ln.(T_(2))/(T_(1))`
`=2.5xx18xx4.2ln((360)/(300))`
`=34.02J//K`