Question

Please help, quick question would really help me out if you can Answer it.?

Calculate the volume of concentrated sulfuric acid (density=1.84g/cm3) containing 98% volume by weight,that would contain 40.0 g of pure H2SO4.

Please explain how you got your answer! Thanks

Answers

Divide the 40.0g by the density to get mL. Divide that by .98 to get effective volume

#1

you can solve it using a proportion. heres the calc.

40g/? =98% / 2%

cross multiply

40x2% = 98% x ?

divide by 98%

(40x2%)/98% = ?

?= .89 g

add that to the 40g of sulfuric acid and you get 40.89g

then divide by the density to get the volume

40.89(g) / 1.84(g/cm3) = 22.2 cm3

#2