11th Class Chemistry Some Basic Concepts of Chemistry Question Bank 11th CBSE Chemistry Some Basic Concepts of Chemistry

  • question_answer Why molality is preferred over molarity in expressing the concentration of a solution?

    Answer:

                    Molality is the number of moles of the solute present in 1 kg of the solvent whereas molarity is the number of moles of the solute present per litre of the solution. Thus, molality involves only masses which do not change with temperature whereas molarity involves volume which changes with temperature. Hence, molality is preferred over molarity.


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