What is the difference between molality and molarity?

 

Answers (1)

Molarity: It is the number of moles of solute present in 1 litre of the solution. It is denoted by M. It is dependent on temperature.

Molarity (M) = \frac{Number\; of\; moles\; of\; solute}{Volume\; of \; solution\; in\; litres}

Molality: It is the number of moles of solute present in 1 kg of solvent. It is denoted by m. It is independent on temperature.

Thus, Molality (m)= \frac{Number\; of\; moles\; of\; the\; solute}{Mass\; of\; Solvent\; in\; kg}

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