CBSENEETJEEClass 11
What is molarity?
Answer
Molarity is the number of moles of solute dissolved per litre of solution, expressed in mol/L or M.
The working
Definition
Molarity (M) is a concentration term giving the moles of solute present in one litre of the solution.
Formula
Molarity = moles of solute ÷ volume of solution in litres, or M = n/V.
Finding moles
Moles of solute = given mass ÷ molar mass, which you substitute into the molarity formula.
Temperature note
Molarity depends on temperature because the volume of solution changes when heated or cooled.
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