posted by Kvs
Concentrated sulphuric acid has a density of 1.9 g/ml and is 99% H2SO4 by weight. calculate the molarity of H2SO4 in this acid.
Molar mass of sulfuric acid=98g/mole
Mass of sulfuric acid in 100 g of solution = 99g
Mass of water in 100 g of solution =1g = 0.001 kg
Number of moles of sulfuric acid in 100 g of solution = 99/98 =1.01 moles
Molality = number of moles of solute/ mass of solvent in kg