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BITSAT2013ChemistrySome Basic Concepts of ChemistryActual

Equal weights of NaCl and KCl are dissolved separately in equal volumes of solutions. Molarity of the two solutions will be :

Options

  1. AEqual
  2. BThat of NaCl will be less than that of KCl
  3. CThat of NaCl will be more than that of KCl solution
  4. DThat of NaCl will be about half of that of KCl solution

Correct answer

C. That of NaCl will be more than that of KCl solution

Step-by-step solution

When equal weights of different solutes are present in equal volumes of solution the molarity is inversely related to molecular mass of the solute. Mol. mass of NaCl is less than KCl . Hence, molarity of NaCl solution will be more.

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