MOLARITY AND MOLALITY

by • 27/08/2013 • GeneralComments (0)358

MOLARITY

The quantity of solute in moles dissolved in 1 liter solution is called “molarity of solution”, denoted by “M”.

Molarity = Moles of solute /Mol. of sol in dm³ (L)

Since Mass/Mol.wt

Molarity = mass in gm /  mol.wt x vol of solution in (L)

Unit

The unit of molarity is mol/ dm³

 

MOLALITY

The amount of solute in moles dissolved in 1kg solvent is called “molality” of solution denoted by “m”.

 

Unit

The unit of Molality is mol/kg.

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