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 sam

1.	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%.
Answer» Solution :Density `=1.41 gm//mL` Mass precent of `HNO_(3)= 69%` Here, `69 gm HNO_(3)` present in 100 gm solution MOLECULAR mass of `HNO_(3) = 1.0079+14.0067+3xx(16.00)` `= 63.0146` gm/mol MOLARITY `= ("WEIGHT of solute " xx 1000)/("Molecular massof solute" xx "Volume of solution")` `= (69xx1000xx1.41)/(63.0146xx100)=15.439 M`