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CH3041
NORMAL SOLUTIONS
NORMAL
SOLUTIONS:
The definition of a normal solution is a
solution that contains 1 gram equivalent weight (EW) per litre of
solution.
An equivalent weight (EW) is equal to the
molecular weight divided
by the number of replaceable H ions (or valence
if it is a cationic metal).
Examples:
if it is a cationic metal).
Examples:
1N HCl MW= 36.5 EW = 36.5 1N 36.5 g/L = 1M
1N H2SO4 MW = 98 EW = 49 1N 49 g/L = 0.5M
1N H3PO4 MW = 98 EW = 32.7 1N 32.7 g/L = 0.33M
The molarity times the number of replaceable
H+ (valence) equals the normality.
