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 pdensity, 1.41 g m L-1 and mass percent of nitric acid is 69%
Answer» Let the total mass of solution be 100gm so, mass of nitric acid = 69% of 100 = 69gm so, moles of nitric acid = 69/63 = 1.09 now mass of solvent is 100gm , so volume will be = mass/D = 100/1.41 = 70.92ml now molarity will be = moles/volume in L = 1.09/0.07092= 15.36M

Calculate the concentration of nitric acid in moles per litre in a sample which has a pdensity, 1.41 g m L-1 and mass percent of nitric acid is 69%

Answer»

Let the total mass of solution be 100gm so, mass of nitric acid = 69% of 100 = 69gm so, moles of nitric acid = 69/63 = 1.09

now mass of solvent is 100gm , so volume will be = mass/D = 100/1.41 = 70.92ml

now molarity will be = moles/volume in L = 1.09/0.07092= 15.36M