A salt solution of NaCl is prepared by dissolving 21.0 g NaCl in 100.0 g of water at 25°C. What is the vapor pressure of the solution Psoln if the vapor pressure of water at 25 °C is Po = 23.76 mm Hg? (For i-factor assume high dilution, FW(NaCl) = 58.5 g/mol, FW(H2O) = 18g/mol)
A. 20.55 mm Hg
B. 21.04 mm Hg
C. 23.05 mm Hg
D. 25.5 mm Hg