Sea Water Has About 0

Multiple Choice

Sea water has about 0.46 moles NaCl and 0.065 moles of MgCl₂ in every litre. What is the vapour pressure of sea water at 30?C if pure water would have a vapour pressure of 33.2 mm Hg? (Assume there are 1000 grams of water in 1 litre of sea water.)

A) 33.2 mm Hg
B) 32.5 mm Hg
C) 37.0 mm Hg
D) 30.3 mm Hg
E) 32.9 mm Hg