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Write the observations, and balanced equations for the following reactions:(i) Sodium hydroxide is added dropwise to a solution of zinc sulphate, till it is in excess.(ii) Ammonium hydroxide is added first in a small quantity, and then in excess, to a solution of copper sulphate.(iii) Excess of ammonium hydroxide is added to a substance, obtained by adding hydrochloric acid to silver nitrate solution.(iv) Moist starch iodide paper is placed at the mouth of a test-tube containing chlorine gas.(v) A paper dipped in potassium permanganate solution is placed at the mouth of a test-tube, containing sulphur dioxide gas. |
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Answer» Write the observations, and balanced equations for the following reactions: (i) Sodium hydroxide is added dropwise to a solution of zinc sulphate, till it is in excess. (ii) Ammonium hydroxide is added first in a small quantity, and then in excess, to a solution of copper sulphate. (iii) Excess of ammonium hydroxide is added to a substance, obtained by adding hydrochloric acid to silver nitrate solution. (iv) Moist starch iodide paper is placed at the mouth of a test-tube containing chlorine gas. (v) A paper dipped in potassium permanganate solution is placed at the mouth of a test-tube, containing sulphur dioxide gas. |
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