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%.

Question

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%.

Philoid · Accepted Answer

Given:

Density of nitric acid = 1.41 g/mol

Percentage of Nitric acid = 69%

69% of nitric acid signifies 69g of nitric acid dissolved in 100g of solvent.

Volume of nitric acid solution = [mass of solution]/ density of solution

= 100/1.41

= 70.922 ml

Number of moles of Nitric Acid = Mass of Nitric acid/ Molecular Mass of nitric acid

= 69/63

= 1.095 moles

Molarity, M_o

= 1092.5/70.92

= 15.404 M

≈ 15.4 M

Therefore, concentration of nitric acid is 15.4 mole/L.

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%.

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%.