Question

a non metals A which is the largest constituent of air, when heated with h2 in the ratio in the ratio of 1:3 in the presence of catalyst fe gives a gas B. on heating with O2 it gives an oxide C if this oxide is passed into water it gives an acid
write the balanced equation​

Answer 1

Answer:

(a)Non-metal A is nitrogen gas N2 since, the percentage ofN2 in air is largest, i.e., 78%. When N2 is heated with Hg in 1:3 ratio in presence of Fe as catalyst, it forms ammonia (NH3). Thus, B is ammonia (NH3) gas. Gas B, when heated with O2, it forms nitric oxide (NO). NO further gets oxidized to NO2 by O2 of the air. Thus, C is NO2 (nitrogen dioxide).     When this oxide is passed into water in the presence of air (O2), it gives nitric acid which acts as a strong oxidising agent. Thus, Dis nitric acid ()   (b) The non-metal belongs to group 15 or VA because N has 5 valence electrons (electronic configuration is 2, 5).