Question

A solution of h2so4 is 20% by mass. if its denisty is 0.92 g/ml.calculate the molarity of solution

Answer 1

Explanation:

H2SO4 is present in 100g of solution.

Volume of solution =

density of solution

mass of solution

= (1.8×1000)g/L

100g

Volume of solution =

18

1L

Per cent H2SO4

w/v of solution = molarity =

volume of solution (in L)

number of moles of H

2

SO

4

Molarity =

volume of solution

given mass of H

2

SO

4

/ molar mass of H2SO4

Molarity =

1/18

98/98

=18M