Statement 1: Critical temperature is the temperature at which the intermolecular attraction in gas molecules vanishes.
Statement 2: At critical point, the density of substance in gaseous and liquid states becomes same.

Question

Statement 1: Critical temperature is the temperature at which the intermolecular attraction in gas molecules vanishes.

Statement 2: At critical point, the density of substance in gaseous and liquid states becomes same.

TestHub · Accepted Answer

Statement 1 is incorrect: at the critical temperature the attractions do not vanish; T c is simply the temperature above which thermal motion prevents liquefaction at any pressure (attractions persist, which is why liquefaction is possible below T c ). Statement 2 is correct: at the critical point the liquid and gas densities merge into a single fluid phase. Ans: (d).

Chemistry - Real Gas Question with Solution | TestHub

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