Air is four fifths nitrogen, yet nitrogen is hard to make use of. We see why, follow ammonia from the Haber process to the Ostwald process and nitric acid, and meet phosphorus with its allotropes, phosphine, chlorides and acids. It covers the Indian syllabus (NCERT, NEET, JEE Main) and the matching topic of A-Level, IB and AP.
3 lessons, about 1 h 35 min3 simulations10 problems3 practice questionsPython in every lesson
Four fifths of the air is nitrogen, and yet plants cannot use it. We see why nitrogen is so unreactive, how the group 15 elements change from nitrogen to bismuth, and how the Haber process turns nitrogen into ammonia.
Nitrogen has five oxides, with nitrogen in oxidation states from +1 to +5. We learn their structures and their nature, then follow the Ostwald process that makes nitric acid, and see what nitric acid does to metals and non-metals.
White phosphorus glows in the dark and catches fire in air. We compare the allotropes of phosphorus, make phosphine, study the chlorides PCl3 and PCl5, and learn how to read the oxoacids of phosphorus and count their basicity.
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