calculate the vapor pressureof a solution of 20.0g sucrose (C12H12O6) in 80.0g water at 25 degrees celsius (vapor pressure, P, of pure water at 25C is 24torr)

Answer 1

n sucrose = grams/molar mass
n H2O = grams/molar mass
XH2O = nH2O/total mols.

P_soln = X_H2O*P^o_{pure water}