Question

2. The volume of oxygen gas required at STP is necessary for the complete combustion of IOL methane measured at 30°C and 760mm of Hg pressure is ) b) 18.01 L C) 15.02 L d) 17.08 L a) 20.5 L​

Answer 1

Answer:

Correct option is

B

91 lit

CH

3

CH

2

CH

3

+5O

2

→3CO

2

+4H

2

O

Moles of propane =

RT

PV

=

0.0821×300

1×20

=0.812 moles

Volume of O

2

required at STP =

P

nRT

=5×

1

0.812×0.0821×273

=91 litres