According to Raoult's Law,
Psolution = XsolventPsolvent
18.6mmHg = X(H2O)*P(H2O at 25o)
Look up the water vapor pressure at 25, substitute above, and solve for X(H2O).
The partial pressure of water above a solution of water and a nonvolatile solute at 25oC is 18.6 mm Hg. What is the mole fraction of the solute?
2 answers
18.6mmHg = X(H2O) * 23.76mmHg
X(H2O) = .7838
What is next?
X(H2O) = .7838
What is next?