P-Block Elements Ques 647

Question: Density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepared by chemical reaction from a compound of nitrogen due to the presence of

Options:

A) argon

B) carbon dioxide

C) some $ N_3 $ molecules analogous to $ O_3 $ .

D) greater amount of $ N_2 $ molecules derived from N-15 isotope.

Show Answer

Answer:

Correct Answer: A

Solution:

Air contains about 1% inert gases, mainly Ar. (At.wt 40) The atomic wt. of $ N_2 $ is 28.



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