Question

The density of a 20% by mass solution of sulphuric acid is 1.14g/ml. Calculate the mass of hydrogen sulphate in one litre of the solution. ?

Answer 1

`"Mass of "HSO_4^(-)-=226.1*g`

Explanation:

We gots a mass of `1*Lxx1000*mL*L^-1xx1.14*g*mL^-1`

`-=1140*g`...and given the starting conditions, 20% by mass of this represents...`H_2SO_4`...i.e. `228*g`

And so `"moles of sulfuric acid"=(228*g)/(98.08*g*mol^-1)=2.33*mol`....

And so formally, there are `2.33*mol` `HSO_4^(-)`, i.e. a mass of `2.33*molxx97.03*g*mol^-1-=226.1*g`