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WHAT IS GRAM EQUILANT MASS? HOW IT IS RELATED TO NORMALITY?
Equivalent weight is the mass of one equivalent, that is the mass of a given substance which will:
    supply or react with one mole of hydrogen cations H+ in an acid–base reaction; or
    supply or react with one mole of electrons e? in a redox reaction.
Equivalent weight, E= Molecular weight/Valence factor=  MO/x
Gram equivalent(geq) is equal to mass in grams numerically equal to equivalent weight. If the mass of a chemical entity is “g” grams, then the given mass contains gram equivalents given by :
Gram equivalent (geq)=g/E
Normality is a measure of concentration of solution. It compares solute in terms of gram equivalents to the volume of solution in litres.
Normality(N)=geq/VL
Its unit is geq/ litres.


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