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# Define Molarity - CBSE (Science) Class 12 - Chemistry

ConceptExpressing Concentration of Solutions

#### Question

Define Molarity (M)

#### Solution 1

Molarity

Molarity (M) is defined as the number of moles of the solute dissolved in one Litre of the solution.

It is expressed as:

Molarity (M) = "Moles of solute"/"Volume of Solution  in Litre"

#### Solution 2

It is defined as the number of moles of solute present in 1000 mL of the solution. Molarity is represented by M.

Molarity (M)  = "Number of moles of solute"/"Volume of solution in mL" xx 1000

or

M = "Weight of solute"/"Molar mass of solute × Volume of solution in mL" xx 1000

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Solution Define Molarity Concept: Expressing Concentration of Solutions.
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