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.

30.4 KJ is required to melt one mole of sodium chloride. The entropy c

1.	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.
Answer» SOLUTION :GIVEN : `delta H_(f) (NaCl) = 30.4kJ = 30400 J MOL^(-1)` `delta S_(f) (NaCl) = 28.4 JK^(-1) mol^(-1)` `T_(f) = ?` `DeltaS_(f) = (Delta H_(f))/(Delta T_(f)) , T_(f) = (Delta H_(f))/(Delta S_(f))` `T_(f) = (30400 J mol^(-1))/(28.4 J K^(-1) mol^(-1)) = 1070.4K`