Question

the density of gases mixt containing the N2 And O3 is 3.2 at 2.463atm and300 k .calculate molar composition


​

Answer 1

Density =

Volume

Weight

At S.T.P., 1.3=

22.4

Weight

⇒Weight=22.4×1.3=29.12g

Weight

mixture

=29.12=Weight

O

2

+Weight

N

2

=n

O

2

M

O

2

+n

N

2

M

N

2

=x×32+(1−x)×28

x=0.28 mole

(where n represents the molecular weight and x represents mole fraction)

Moles of O

2

=0.28

At S.T.P., pressure =1 atm

Partial pressure of O

2

=

n

total

n

O

2

×pressure=

1

0.28

×1=0.28 atm.