How does the average kinetic energy of a gas molecule depend on the absolute temperature of the gas?

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Average K.E. of gas molecules is directly proportional to the absolute temperature .

Average K.E. of gas molecules is inversely proportional to the absolute temperature .

Does not depend on Absolute temperature.

None of these

answer is A.

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Detailed Solution

Concept: Use the definition of absolute temperature, which states that it is the lowest possible point on the Kelvin scale, to guide your decision-making.
Absolute zero, often known as zero kelvin, is the lowest point on the thermodynamic temperature scale, where the enthalpy and entropy of a cooled ideal gas can both reach their lowest values.
There can consequently be no lower temperature than absolute zero because at this temperature, a substance's particles remain practically stationary.
Since the average kinetic energy of a gas molecule is thus only directly related to absolute temperature, all molecular motion would be rendered impossible at absolute zero.
Hence, option 1 is correct.

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