Question

What is the difference between molarity molality and normality

Answer 1

Answer:

Molarity:

Molarity refers to the number of moles of a substance present in 1 Litre of solution

It is denoted as "M"

Formula for molarity

M = (no of moles)/(volume of solution).

"Volume of solution should be taken in litres."

Molality:

Molality refers to the number of moles of solute in 1 kg of solvent.

It is denoted by "m"

Formula for molality

m = (no. of moles)/(weight of solvent)

"Weight of the solvent should be taken in kg".

Normality:

It is the number of equivalents of a solute present in 1 litre of solution

It is denoted by "N"

Formula for normality:

N = (no. of equivalents)/(vol. of solution)

Answer 2

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Molarity, molality, and normality are all units of concentration in chemistry. Molarity ( ) is defined as the number of moles of solute per liter of solution. Molality ( ) is defined as the number of moles of solute per kilogram of solvent. Normality ( ) is defined as the number of equivalents per liter of solution.