UPSC Combined Geo-Scientist, Mains · 2018 · Mains Paper I
Q2(b). Basicity of ortho-, pyro- and metaphosphoric acids
Question
Explain the basicities of the following acids and justify the answer by drawing the structures: (i) orthophosphoric acid (ii) pyrophosphoric acid (iii) metaphosphoric acid.
Model answer
The free solution for 2018 answers questions 1, 3, 4, 6, 8 and 11, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.
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Coversphosphoric acid basicitypyrophosphoric acidmetaphosphoric acidP-OH groups
All parts of Question 2
- 2(a) Electron affinity trends; near-zero values for Be, Mg, Ca and N10 marks
- 2(b) Basicity of ortho-, pyro- and metaphosphoric acids10 marks
- 2(c) Products of five p-block reactions10 marks