A non-metal A which is the largest constituent of air, when heated with H2 in 1 : 3 ratio in the presence of catalyst (Fe) gives a gas B. On heating with 02, it gives an oxide C. If this oxide is passed into water in the presence of air, it gives and acid D which act as a strong oxidising agent,
(a) Identify A, B, C and D.
(b) To which group of periodic table does this non-metal belong?
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Answer:
a.
A: nitrogen N2
B: ammonia NH3
C: nitrogen dioxide NO2
D: Nitric Acid HNO3
b. nitrogen belongs to group 15 or VA
Explanation:
N2 + 3H2 -----> 2NH3
N2 + 2O2 ----> 2NO2
4NO2 + O2 + 2H2O ----> 4HNO3
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