The thermodynamic property that measures the extent of molecular disorder is called entropy. Entropy change of phase transformation can be calculated using Trouton's formula `(DeltaS = DeltaH//T)`. In the reversible adiabatic process, however, `DeltaS` will be zero. the rise in temperature in isobaric and isochoric conditions is found to increase the randomness or entropy of the system.
`DeltaS = 2.303 C log (T_(1)//T_(2))`
The entropy change in an adiabatic process is

Options

A. `+20 J K^(-1) mol^(-1)`
B. `-10 J K^(-1)mol^(-1)`
C. Zero
D. Same to that of surroundings