In: Chemistry
A 10.0% by mass H2SO4 (aq) solution has a density of 1.07 g/mL. How many milliliters of solution contain 8.37 g of H2SO4? What is the molality of H2SO4 in solution? What mass (in grams) of H2SO4 is in 250 mL of solution?
10% H2So4 means 10g of H2SO4 present in 100g of solution
volume of solution = mass/density
= 100/1.07
= 93.46ml
10g of H2SO4 present in 93.46ml of solution
8.37g of H2So4 present in = 93.46*8.37/10 = 78.23ml of solution
mass of solvent = mass of solution - mass of solute
= 100-10 = 90g
molality = W*1000/G.M.Wt*weight of solvent in g
= 10*1000/98*90
= 1.134m >>>>>>>>answer
93.46ml of solution contains 10g of H2SO4
250ml of solution contains = 10*250/93.46 = 26.75g of H2So4