Question

The complete combustion of 20 cm of a gaseous alkane, X, requires 130 cm of oxygen. Both volumes were measured at r.t.p.. What could be the identity of X? A butane Bethane methane D propane​

Answer 1

Answer:

20(x+

4

y

) cc

Given,

A hydrocarbon formula

C

x

H

y

→xCO

2

+y/2H

2

O

We would need x+0.25% of y molecules of O

2

The volume of oxygen needed for complete combustion of 20 cc20 cc of a gaseous hydrocarbon C

x

H

y

is

20(x+

4

y

)

Option C is correct.

CxH$$C_xH_y