Freezing point of an aqueous solution is −0.186oC. Elevation of boiling point of the same solution is ________ if Kb=0.512 K molality−1 and Kf=1.86 K molality−1:
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a
0.186oC
b
0.0512oC
c
0.092oC
d
0.237oC
answer is B.
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Detailed Solution
ΔTf=1000.Kf.wW.m and ΔTb=1000.Kb.wW.m∴ ΔTfΔTb=KfKb 0.186ΔTb=1.860.512∴ ΔTb=0.05120c