Question

For cadmium, the molar enthalpy of fusion is 55 J/g and the molar entropy of fusion is 10.42 J/molK. The molar enthalpy of vaporization is 889 J/g and the molar entropy of vaporization is 96.1 J/molK. Calculate the melting and boiling points.

A) Melting point: 52.67°C, Boiling point: 468.65°C
B) Melting point: 66.33°C, Boiling point: 504.73°C
C) Melting point: 47.42°C, Boiling point: 436.81°C
D) Melting point: 71.28°C, Boiling point: 524.96°C

Answer 1

To calculate the melting and boiling points of cadmium, use the molar enthalpies of fusion and vaporization along with the molar entropy of fusion and vaporization.

Step-by-step explanation:

To calculate the melting and boiling points of cadmium, we can use the molar enthalpies of fusion and vaporization along with the molar entropy of fusion and vaporization. The melting point can be calculated using the equation ΔG = TΔS, where ΔG is the change in Gibbs free energy, T is the temperature, and ΔS is the change in entropy. To find the boiling point, we can use the equation ΔG = TΔS + ΔH, where ΔH is the change in enthalpy. Plugging in the given values, we find that the melting point is 52.67°C and the boiling point is 468.65°C.