In: Chemistry
A bottle of concentrated aqueous perchloric acid, labeled 70% (w/w) has a concentration of 11.6M. What iis the density of 70% (w/w) HClO4?
70% (w/w) HClO4 solution means 70g of HClO4 present in 100g of solution
molarity = W*1000/G.M.Wt * volume of solution in ml
11.6 = 70*1000/100.46*volume of solution in ml
volume of solution in ml = 70*1000/100.46*11.6 = 60ml
mass of solution = volume of solution * density of solution
density of solution = mass of solution /volume of solution
= 100/60 = 1.67g/ml
density of HClO4 is 1.67g/ml >>>>answer