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NEET 2020
Exam
NEET
Year
2020
Subject
Chemistry
Chapter
Solutions

NEET 2020 · Chemistry · Solutions

The freezing point depression constant ( K _ f ) of benzene is...

The freezing point depression constant (Kf)\left({K}_{f}\right) of benzene is 5.12Kkgmol–15.12Kkg{mol}^{– 1}. The freezing point depression for the solution of molality 0.078m0.078m containing a non-electrolyte solute in benzene is (rounded off upto two decimal places):

Options

  1. A0.80K0.80K
  2. B0.40K0.40K
  3. C0.60K0.60K
  4. D0.20K0.20K

Correct answer

B. 0.40K0.40K

Step-by-step solution

ΔTf=Kf×m{\Delta T}_{f} = {K}_{f} \times m

=5.12×0.078= 5 . 12 \times 0 . 078

ΔTf=0.40K{\Delta T}_{f} = 0 . 40K

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