Raoult's law works for other units of pressure, such as atm, mmhg, and torr. the only requirement is that both vapor pressures have the same units. predict the vapor pressure (in torr) of carbon tetrachloride, ccl4, over a solution which is composed of 350.0 g of ccl4 and 247.5 g of i2 at 65ºc. submit your answer with 1 digit past the decimal. pºccl4 at 65ºc = 531 torr molar mass of ccl4 is 153.81 g/mol molar mass of i2 is 253.8 g/mol