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JEE Advanced levelSingle correct optionDifficulty 3 of 3mc086

To prepare of (), what volume of concentrated acid ( by mass, density ) must be diluted?

  1. A
  2. B
  3. C
  4. D

Answer: B

Moles needed = 0.500 x 0.50 = 0.25 mol = 24.5 g of pure acid. Mass of 98% acid = 24.5/0.98 = 25 g. Volume = 25/1.84 = 13.6 mL.
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