Practice question · Numerical answer
A crystal of carbon monoxide retains a residual entropy of per molecule. For one mole, compute this in J/K, using J/mol/K, to one decimal place.
Hints
- Per mole, Boltzmann’s constant becomes the gas constant.
- Compute 8.314 x ln 2.
Show the answer
5.8 (answers within ±0.15 count)
Why
J/K per mole. The two nearly equivalent molecular orientations freeze in at random, so the crystal is not perfect and Planck’s statement does not apply.
Practise The Third Law and Low Temperatures
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More questions on The Third Law and Low Temperatures
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- Match each statement of the third law or its consequences to what it says.
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