12g of a nonvolatile solute dissolved in 108g of water

Question:

12g of a nonvolatile solute dissolved in 108g of water produces the relative lowering of vapour

pressure of 0.1. The molecular mass of the solute is :

  1. 60

  2. 80

  3. 40

  4. 20


Correct Option: , 4

Solution:

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