SolutionHard
Question
When 20 g of naphthoic acid (C11H8O2) is dissolved in 50 g of benzene (Kf = 1.72 K kg mol-1), a freezing point depression of 2 K is observed. The van′t Hoff factor (i) is
Options
A.0.5
B.1
C.2
D.3
Solution
ᐃTf = Kf × molality × i
2 = 1.72
i = 0.5
Hence (A) is correct.
2 = 1.72
i = 0.5
Hence (A) is correct.
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