Question

the density of a mixture of methane and ethane at 300 k and 101 kpa is 0.793 kg m3 the mol % of ch4 and c2h6 in the mixture are respectively ​

Answer 1

Answer:

An equimolar mixture of methane and ethane.

Lets take 1 mole of methane (CH

4

) and 1 mole of ethane (C

2

H

6

)

So total moles =1+1=2

Now,

PV=nRT

1×V=2×0.0821×273

V=2×0.0821×273=44.8266

Volume =44.8266L

Molar mass of mixture=1×CH

4

+1×C

2

H

6

=1×16+1×30=16+30=46

So , density =

volume

mass

=

44.8266

46

=1.026g/L≈1.03g/L

Option A is correct.