30 . 4 kJ of heat is required to melt one mole of sodium chloride and the entropy change at the melting point is 28 . 4 J K – 1 mol – 1 at 1 atm . The melting point of sodium chloride is _______ K (Nearest Integer)

Question

30 . 4 kJ of heat is required to melt one mole of sodium chloride and the entropy change at the melting point is 28 . 4 J K – 1 mol – 1 at 1 atm . The melting point of sodium chloride is _______ K (Nearest Integer),

MARKS App · Accepted Answer

The equilibrium process can be written as follows, NaCl s ⇌ NaCl l ΔS = ΔH Temp T = ΔH ΔS = 30 .4 × 10 3 28 .4 = 1070 .4 K

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