Which of the following gases can be most easily liquified? Given, the value of a in van der Waals equation for NH3=4.17,CO2=3.59,SO2=6.71&Cl2=6.49
A
NH3
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B
Cl2
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C
SO2
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D
CO2
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Solution
The correct option is CSO2 Van der Waals equation of state is given as: (P+n2aV2)(V−nb)=nRT......(1) Here, a represents the attractive force between the gas molecules. Higher the value of a, more easily the gas can be liquified. In the given list of gases, SO2 has the higher value of a . Hence, it can be liquified more easily compared to the other gases given. Thus, option (c) is the correct answer.