he boiling point of a solution containing 0.20 gm of a
substance X in 20 gm of ether is 0.17 K higher than that
of pure ether. Calculate the molecular weight of x.
Kb = 2.16 (for 1 kg ether).
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Explanation:
Given:
∆Tb = 0.17
mass of substance x = 0.20 gm
mass of solvent = 20 gm
kb for ether= 2.16
∆Tb = kb× m
0.17 = 2.16 × 0.20 × 1000/ M × 20
M= 124.44
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