Explain the importance of third law of thermodynamics.

1.	Explain the importance of third law of thermodynamics.
Answer» The importance of third law of thermodynamics lies in the fact that it permits the calculation of absolute values of entropy of pure substances from thermal data alone. For a pure substance, this can be done by summing \(\frac{q_{rev}}{T}\) increments from 0 K to 298 K Standard entropies (S_m^θ) can be used to calculate standard entropy changes(Δ_rS^θ).

Answer»

The importance of third law of thermodynamics lies in the fact that it permits the calculation of absolute values of entropy of pure substances from thermal data alone. For a pure substance, this can be done by summing \(\frac{q_{rev}}{T}\) increments from 0 K to 298 K

Standard entropies (S_m^θ) can be used to calculate standard entropy changes(Δ_rS^θ).

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Explain the importance of third law of thermodynamics.

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