What happen when (i) hydrogen sulphide is bubbled through an aqueous – InterviewSolution

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1.	What happen when (i) hydrogen sulphide is bubbled through an aqueous solutions of sulphur dioxide. (ii) aqueous ammonia is added dropwise to a solution of copper sulphate till it is in excess. (iii) tin is treated with concentrated nitric acid. (iv) CrCl_(3) solutions is treated with sodium hydroxide and then with hydrogen peroxide. (v) Pb_(3)O_(4) is treated with nitric acid.
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