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

Calculate the concentration of nitric acid in moles per litre in a sam

1.	Calculate the concentration of nitric acid in moles per litre in a sample which has a density, 1.41 g and the mass per cent of nitric acid in it being 69%.
Answer» ration of HNO3 = 15.44 mol/LExplanation:Mass PERCENT of HNO3 GIVEN in the Sample = 69 %Thus, 100 g of HNO3 contains 69 g of HNO3 by mass. Molar mass of HNO3:= { 1 + 14 + 3(16)} g mol ^ - 1= 1 + 14 + 48 = 63g mol^{-1} No. of moles in 69 g of HNO3:= = 1.095 mol es Volume of 100g HNO3 solution:= = = 70.92mL = 70.92 * L= 15.44mol/L Therefore, Concentration of HNO3 = 15.44 mol/L