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Two solutions A and B are prepared by dissolving 1g of no-volatile solutes X and Y respectively in 1 kg of water. The ratio of depression in freezing point for A and B is found to be 1 : 4. The ratio of molar masses of X and Y is

Option 1 -

1 : 4 

Option 2 -

1 : 0.25  

Option 3 -

1 : 0.20

Option 4 -

1 : 5

0 2 Views | Posted 2 months ago
Asked by Shiksha User

  • 1 Answer

  • P

    Answered by

    Payal Gupta | Contributor-Level 10

    2 months ago
    Correct Option - 2


    Detailed Solution:

    ΔTf=i×kf×M

    (ΔTf)x (ΔTf)y=iKfmxiKfMY=MXMY

    ⇒14=1MX×MY1⇒MXMY=41=10.25

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