Write the balanced chemical equation of the preparation of bases: (a) Preparation of Copper hydroxide by double decomposition (b) Preparation of Ammonium hydroxide (c) Preparation of lead oxide by the action of oxygen on metal sulphides.
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(i) 2NO2(g) + H2O(l)→ HNO2(aq) + HNO3
(ii) H2S2O7 + H2O → 2 H2SO4
Explanation:
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