The amount of a non-electrolyte dissolved is doubled but that of solvent is quadrupled, the elevation in boiling point of the solution will be
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Halved
Because the concentration of solution is halved.
ΔTb=Kb×W2×1000/M2×W1
ΔT′b=Kb×(2W2)×1000/M2×(4W1)
=1/2(Kb×W2×1000/M2×W1)
=1/2ΔTb
If the amount of a nonelectrolyte dissolved is doubled, but that of solvent is quadrupled, the elevation in the boiling point of the solution will be Halved.
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