The normal boiling point of diethyl ether is 34.5 C. A solution
containing a nonvolatile solute dissolved in diethyl ether has a
vapor pressure of 698 torr at 34.5 C. What is the mole fraction of
diethyl ether in this solution?
Assuming complete dissociation of the solute, how many grams of
KNO3 must be added to 275 mL of water to produce a solution that
freezes at −14.5 ∘C? The freezing point for pure water is 0.0 ∘C
and Kf is equal to 1.86 ∘C/m.
How much 10.0 M HNO3 must be added to 1.00 L of a buffer that is
0.0100 M acetic acid and 0.100 M sodium acetate to reduce the pH to
5.00? (pKa of acetic acid = 4.75)