The entropy change associated with the conversion of 1 kg of ice at 273 K to water vapours at 383 K is (Specific heat of water liquid and water vapour are $4.2 \mathrm{~kJ} \mathrm{~K}^{-1} \mathrm{~kg}^{-1}$ and 2.0 $\mathrm{kJ} \mathrm{K}^{-1} \mathrm{~kg}^{-1}$; heat of liquid fusion and vapourisation of water are $334 \mathrm{~kJ} \mathrm{~kg}^{-1}$ and $2491 \mathrm{~kJ} \mathrm{~kg}^{-1}$, respectively). $(\log 273=2.436, \log 373=2.572, \log 383=2.583)$