Question

A commercial sample of hydrogen peroxide is labelled as 10 volume its strength in gram per litre is

Answer 1

Answer:

1 mL of 10 volume H

2

O

2

= 10 mL of O

2

at NTP.

2(2+32) =68 g

2H

2

O

2

→2H

2

O+

22400 mL at NTP

O

2

22400 mL of O

2

at NTP are obtained from 68 g of H

2

O

2

10 mL of O

2

at NTP are obtained from

22400

68

×10 g of H

2

O

2

10 mL of O

2

at NTP are obtained from

2240

68

g of H

2

O

2

1 ml of H

2

O

2

solution contains

2240

68

g of H

2

O

2

.

100 ml of H

2

O

2

solution contains

2240

68

×100=3% of H

2

O

2

.