1.

Give one chemical test to distinguish between the following pairs of compounds: 1. Zinc sulphate solution and Zinc chloride solution. 2. Iron (II) chloride solution and Iron (III) chloride solution. 3. Calcium nitrate solution and Calcium chloride solution.

Answer»

1. On addition of BaCl2 solution, Zinc sulphate solution will give a white ppt. of BaSO4 while Zinc chloride solution will not give any ppt with BaCl2 solution. 

2. Iron II chloride gives a dirty green ppt with NaOH solution. Iron III chloride will give a reddish brown ppt with NaOH solution.

3. Calcium chloride solution will give a white ppt with AgNO3 solution while calcium nitrate solution will not give any ppt with AgNO3 solution.



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