(a) Using data in Appendix C, estimate the temperature at which the free-energy change for the transformation from I2(s) to I2(g) is zero. What assumptions must you make in arriving at this estimate?
(b) Use a reference source, such as Web Elements (www.webelements.com), to find the experimental melting and boiling points of I2.
(c) Which of the values in part (b) is closer to the value you obtained in part (a)? Can you explain why this is so?