what is the difference between molarity & molality?
Asked by sahabya | 31st May, 2010, 10:13: AM
Expert Answer:
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.
Answered by | 31st May, 2010, 10:42: AM
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