a) Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 degrees Celcius, the vapor pressure of pure benzene is 100.84 torr.
What is the vapor pressure of a solution made from dissolving 13.8 g of biphenyl in 32 g of benzene?
b) Express the concentration of a 0.07 M aqueous solution in fluoride, F^-, in mass parts per million. Assume the density of the solution is 1.00 g/mL.