1.

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.

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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