Question

The density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepared by a chemical reaction from a compound of nitrogen due to the presence of the following in aerial nitrogen

• A. Argon
• B. $CO_2$
• C. Some nitrogen molecules analogous to $O_2$
• D. Greater amount of nitrogen molecules derived from $N^{15}$ isotope

Answer 1

Answer: (A)

Argon

Answer 2

he density of nitrogen obtained from air (after the removal of $N_2, CO_2$, moisture etc.) is higher than nitrogen obtained chemically. This is due to the presence of heavier argon in the aerial nitrogen