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JEE Main202117 Mar 2021Morning ShiftChemistrySome Basic Concepts of ChemistryActual

The mole fraction of a solute in a 100 molal aqueous solution ________ × 10 - 2 . (Round off to the Nearest Integer). [Given : Atomic masses: H : 1 . 0 u , O : 16 . 0 u ]

Correct answer

0

Step-by-step solution

100 molal aqueous solution means there is 100 mole solute in 1   kg = 1000   gm water. Now, mole-fraction of solute = n solute  n solute  + n solvent  = 100 100 + 1000 18 = 1800 2800 = 0 . 6428 = 64 . 28 × 10 - 2

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