Question

Calculate the concentration of nitric acid in moles per litre in a sample which has a density, 1.41g/ml and the mass percent of nitric acid in it being 69%.

PLEASE ANSWER IN THE SIMPLEST WAY WITH A LOT OF EXPLANASION ​

Answer 1

Explanation:

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.