Given below are observations on molar specific heats at room temperature of some common gases.

which is significantly lower from the specific heat of the above gases. Explain It can be observed that chlorine has little larger value of specific heat, what could be the reason?Generally, the specific heat of a monoatomic gas is \( 2.92 cal\; mol\; K ^{‑1}\)

Asked by Pragya Singh | 1 year ago |  83

1 Answer

Solution :-

The gases in the above list are all diatomic and a diatomic molecule has translational, vibrational and rotational motion. Whereas, a monoatomic gas only has translational motion. So, to increase the temperature of one mole of a diatomic gas by 1°C, heat needs to supplied to increase translational, rotational and vibrational energy.  Thus, the above gases have  significantly higher specific heats than monoatomic gases Chlorine has little larger specific heat as compared to the others in the list because it possesses vibrational motion as well while the rest only have rotational and translational motions.

Answered by Pragya Singh | 1 year ago

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