Question

A mixture is prepared by mixing 20 gm So, in 30 gm H,SO,4 determine percentage labelling of oleum​

Answer 1

Formulae for formation of oleum.

H₂SO₄(aq) + SO₃(g) —> H₂S₂O₇(l)

The molar mass of oleum :

2 + 64 + 112 = 178g

The mass of Oleum formed is :

10 + 40 = 50g

50/178 × 100 = 28.09%

= 28.09%