The enthalpy of vaporization of water is $186.5 \, kJ \, mol^{-1}$. What is the entropy of vaporization in $kJ \, K^{-1} \, mol^{-1}$?

What is the change in entropy when an ideal gas expands into a vacuum?

For a process to occur spontaneously,

Which of the following reactions will have the value of $\Delta S$ with a negative sign?

Provide the mathematical equation for entropy change.

Melting point of a solid is $x \ K$ and its latent heat of fusion is $600 \ cal \ mol^{-1}$. The entropy change for fusion of $1 \ mol$ solid is $2 \ cal \ mol^{-1} \ K^{-1}$. The value of $x$ will be......$K$