Question

16. The diffusion rate of an unknown gas is measured to be 31.50 mL/min. Under

identical conditions, the diffusion rate of oxygen gas is measured to be 30.50
mL/min. Hint: diffusion rate is directly related to velocity.
Determine the identity of the unknown gas from the following options:
a. CH4
b. CO
C. NO
d. CO2
e. NO2

Answer 1

Step-by-step explanation:

`(r_1)/(r_2) = \sqrt{(M_2)/(M_1) }`

r₁ and r₂ are rate of diffusion of gas having molecular mass of M₁ and M₂

`(31.5)/(30.5) = \sqrt{(32)/(M_1) }`

1.0666 = 32 / M₁

M₁ = 30

molecular weight of NO = 14 + 16 = 30

So the unknown gas is NO .