Determine the grams per liter of HNO3.
1.42 g
70.0
1000 mL
------X ------X ----------= 994 g/L HNO3
mL
100
L
Multiply the gram per liter concentration of the acid times the grams per mole,
using the factors appropriately.
994 g
mol
------X --------= 15.8 mol/L
L
63.0 g
c. Conversion From g/mL to Eq/L. Normality is based on equivalents of solute
per liter of solution.
Example. What is the Eq/L concentration of a H2SO4 solution with an S.G. of
1.84 and an assay of 95.0%?
Solution. Express the desired unit of concentration (Eq/L) using the
information given as appropriate factors.
Calculate the GEW of the compound.
H2SO4
H
1.0 X 2 =
2.0
S
32.1 X 1 = 32.1
O
16.0 X 4 = + 64.0
98.1 g/mol
98.1 g
mol
------X ------= 49.0 g/Eq
mol
2 Eq
MD0837
8-8