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Solutions question

2020 · Q102
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Solutions question

2020 · Q102

NEETChemistrySolutionsMCQ+4 / −1
The freezing point depression constant (Kr) of benzene is 5. 12 K kg mol-1. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is rounded off upto two decimal places :
  1. A
    0.80 K
  2. B
    0.40 K
  3. C
    0.60 K
  4. D
    0.20 K
View written solutionFree

Correct answer: B

ΔTf=kfm\Delta {T_f} = {k_f}mΔTf​=kf​m
= 5.12 ×\times× 0.078
= 0.399 K = 0.4 K

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