HW3

Mercury vapor is toxic and a problem because of the relatively high vapor pressure exhibited by liquid mercury under ordinary conditions. Below are Hg vapor pressure data at various temperatures(in oC). From this information, calculate the molar enthalpy of vaporization of liquid mercury. 760 torr is 1 atm. A millitorr is one-thousandth of a torr.

50oC 12.7 millitorr
80oC 88.8 millitorr
120.5oC 745.7 millitorr
140oC 1845 millitorr
160oC 4189 millitorr