19.
Calculate the concentration of nitric acid in
moles per litre in a sample which has a density,
1.41 g mL-1 and the mass per cent of nitric acid
in it being 69%
(b) 13.83 M
(a) 13.83m
(c) 31.38 M
(d) 14.67 M
Answers
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1
Answer:
The density of the solution is 1.41 g/mL.
1000 g of the solution will have a volume =
Density
Mass
=
1.41
1000
=709 ml.
The mass per cent of nitric acid is 69%.
1000 g of the solution will have 1000×
100
69
=690 g of nitric acid.
The molarity of solution is
Molar mass of nitric acid ×Volume of solution
Mass of nitric acid
=
63×709
690
=0.0155 M.
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