Question

calculate molarity and molality of H2SO4 solution containing 98 % by mass of H2SO4 and having density of 1.8 g/ml. ​

Answer 1

Answer:

of Sulphuric Acid in solution = 98%

means 98g of H

2

SO

4

is present in 100g solution.

Molar mass = 98 g/mole

∵ No. of moles =

98

98

= 1 mole ...(1)

Density of solution = 1.8g/cm

3

∴ Volume =

1.8

100

(ml) ...(2)

Molarity =

volumeofsolution

no.ofmolesofsolute

from (1) & (2)

Molarity =

100

1

×1.8×1000(in Lvolume)

=18M