Thursday, September 30, 2010

Molarity & Molar solution

Molarity is a chemical unit used to express the concentration or strength of a solution. What do you mean by molarity?
Definition for molarity
Molarity is the number of moles of solute present in one litre of the solution. In general we can say that
Molarity of the solution=Number of moles of the solute/Volume of the solution in litres
Also we can say that if w is the weight in grams of solute dissolved in V litres of the solution & if M is the gram molecular weight of the solute, then we can say that
Molarity= w/MV
Definition for one molar solution
One molar solution means it contains one mole of the solute dissolved in one litre of the solution.

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