If a solid has a heat of fusion of 17.02 kj/mol and an entropy of fusion of 38.98 j/mol- k, what is the melting point in °c) of this pure solid? type your answer rounded to 1 decimal place without units (i. e. nn. n).

Explanation:

Melting point is defined as the point at which a solid substance starts to change into liquid state.

Whereas entropy is the degree of randomness of molecules present in a substance.

Heat of fusion is defined as the amount of heat energy necessary to melt a solid substance at its melting point.

Relation between entropy and heat of fusion is as follows.

where,           = 38.98 J/mol K

                      = 17.02 kJ/mol

                                    =

                                    = 17020 J/mol

Therefore, calculate the melting point as follows.

                           38.98 J/mol K =

                              T = 436.63 K

Change the temperature into degree celsius as follows.

                                 =

Thus, we can conclude that the melting point in is .

hey there!

boiling point is the temperature at which the vapor pressure of the liquid equals atmospheric pressure. the vapor pressure of solvent molecules is decreased when a solute is added, so a higher temperature is required to increase the number of solvent molecules in the gas phase above the liquid.

at the freezing point, the vapor pressures of the solid and liquid are equal; a lower temperature is needed to reduce the number of solvent particles above the liquid.

hope this you

tobey