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JEE Main levelSingle correct optionDifficulty 2 of 3mc137

Concentrated sulphuric acid is 98% by mass with density (). Its molarity is

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

Answer: C

1000 mL has mass 1840 g, of which 98% = 1803.2 g is . Moles = 1803.2/98 = 18.4, so M = 18.4 mol/L.
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More questions on Concentration terms (molarity, molality, mole fraction, ppm) and dilution