States of Matter - Result Question 10
####10. From a heated mixture of nitrogen, oxygen and carbon, two compounds (out of the many obtained) are isolated. The rates of diffusion of the two isolated compounds are almost identical. The two compounds are
[1999]
(a) $N_2 O$ and $CO_2$
(b) $CO$ and $NO$
(c) $CO_2$ and $NO_2$
(d) $N_2 O$ and $CO$
Show Answer
Solution:
- (a) Rate of diffusion depend upon molecular weight
$ \frac{r_1}{r_2}=\sqrt{\frac{M_2}{M_1}} \Rightarrow r_1=r_2 \text{ if } M_1=M_2 $
Hence compounds are $N_2 O$ and $CO_2$ as both have same molar mass i.e. 22
