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30.4 kJ is required to melt one mole of sodium chloride. The entropy change during melting is 28.4 JK^-1 mol^-1 .

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30.4 kJ is required to melt one mole of sodium chloride. The entropy change during melting is 28.4 JK-1 mol-1 . Calculate the melting point of sodium chloride.

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∆Hf (NaCl) = 30.4 kJ = 30400 J mol-1 

∆Sf (NaCl) = 28.4 JK-1 mol-1 

Tf = ?

Tf = 1070.4 K.

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