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The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.(a) Name A (a liquid), B (a solid) and C (a liquid). ( Do not give the formulae)(b) Write an equation to show how nitric acid undergoes decomposition(c) Write the equation for the reaction in which copper is oxidized by concentrated nitric acid |
Answer» (a) A = Conc. Sulphuric acid B = potassium nitrate C = nitric acid (b) Nitric acid undergoes decomposition as follows: 4HNO3 + heat → 4NO2 +2H2O +O2 (c) Copper is oxidized by concentrated nitric acid: Cu + 4HNO3 →Cu(NO3)2 + 2H2O +2NO2 |
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