What is the entropy of vaporisation of water | vedclass

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(B) The entropy of vaporisation $(\Delta S_{vap})$ is calculated using the formula: $\Delta S_{vap} = \frac{\Delta H_{vap}}{T}$.Given,molar heat of va

Vedclass · Accepted Answer

$26$

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(B) The entropy of vaporisation $(\Delta S_{vap})$ is calculated using the formula: $\Delta S_{vap} = \frac{\Delta H_{vap}}{T}$.Given,molar heat of vaporisation $\Delta H_{vap} = 9710\,cal/mol$.The temperature $T = 100\,^{\circ}C = 100 + 273 = 373\,K$.Substituting the values: $\Delta S_{vap} = \frac{9710\,cal/mol}{373\,K} \approx 26.03\,cal/K/mol$.Rounding to the nearest integer,we get $26\,cal/K/mol$.

What is the entropy of vaporisation of water at $100\,^{\circ}C$,if the molar heat of vaporisation is $9710\,cal/mol$?

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