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Chemistry · 2019

JEE Main · 9 January 2019, Shift 2 · Q55

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…

The entropy change associated with the conversion of $\displaystyle 1$ kg of ice at $\displaystyle 273$ K to water vapours at $\displaystyle 383$ K is : (Specific heat of water liquid and water vapour are $\displaystyle 4.2 \mathrm{~kJ} \mathrm{~K}^{-1} \mathrm{~kg}^{-1}$ and $\displaystyle 2.0 \mathrm{~kJ} \mathrm{~K}^{-1}$ $\displaystyle \mathrm{kg}^{-1}$; heat of liquid fusion and vapourisation of water are $\displaystyle 334 \mathrm{~kJ} \mathrm{~kg}^{-1}$ and $\displaystyle 2491 \mathrm{~kJ} \mathrm{~kg}^{-1}$, respectively). $\displaystyle (\log 273=2.436$, $\displaystyle \log 373=2.572, \log 383=2.583)$
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JEE Main 2019 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.