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Pure water is at 30 mm Hg. What is p with a non-volatile solute at x = 0.02?
A30.6 mm Hg
B0.6 mm Hg
C24.0 mm Hg
D29.4 mm Hg
Answer & Solution
Correct answer: D. 29.4 mm Hg
The lowering is 0.02 × 30 = 0.6 mm Hg, so the solution's vapour pressure is 30 - 0.6 = 29.4 mm Hg.
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