Question
Thu March 18, 2010 By: Ratheesh Raghavan

which is more 1 molar ot 1 molal

Expert Reply
Fri March 19, 2010

Molality (m) is the number of moles of solute present in 1kg of solvent

Molarity (M) is the number of moles of solute present in 1L of solution

In 1 molar solution, 1 mole of solute is present in 1000 g of solvent whereas in 1 molar solution, 1 mole of solute is present in 1000 mL of solution. Solution is made up of solvent and solute. Hence in 1 molar solution amount of solvent is less. Hence its concentration is more.

Hence 1 molar solution is more concentrated than 1 molal solution.

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