List of top Chemistry Questions on Entropy and free energy asked in KEAM

The enthalpy of vapourisation of diethyl ether is $26.0\text{ kJ mol}^{-1}$ and its normal boiling point is $35^\circ C$. What is the value of $\Delta S^0$ for the conversion of liquid diethyl ether to vapour at $35^\circ C$?

The molar entropy of which of the following reaction is negative?