Give one observation for each of the following: (a) Lead nitrate is strongly heated. (b) Silver nitrate is treated with potassium chloride. (c) Sodium hydroxide is added to copper sulphate solution. (d) Ammonium chloride is added to calcium hydroxide. (e) Silver nitrate is strongly heated. (f) Hydrated copper sulphate is heated. (g) Iron (III) chloride is treated with sodium hydroxide solution.
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Explanation:
(a) brown fumes of nitrogen dioxide is seen
(b) white precipitate of silver chloride is seen
(c) a blue precipitate of copper hydroxide is seen
(d) pungent smelling ammonium is obtained
(f) the solution changes its colour from blue to colourless
(g) precipitate of iron hydroxide is formed
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