Question

48. Calculate the molality of solution of C,H,OH in water in which the mole fraction of C,H,OH is 0.050.
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Answer 1

Answer:

Mole fraction of C2H5OH = 0.050

mole fraction of water = 1–0.050 = 0.95

mass of water = 0.95 x 18 = 17.1 g = 0.0171 Kg

molality of C2H5OH = 0.05 / 0.0171 = 2.924 m