Question

Q6. What do you observe in the
following cases :
(1) Copper sulphate is treated with Sodium hydroxide solution.
(ii) Ammonium dichrom ate solution is strongly heated.
(ii) Lead nitrate solution is treated with Sodium chloride solution.​

Answer 1

1.Copper sulphate reacts with sodium hydroxide to form a blue precipitate of copper hydroxide and sodium sulphate. In an experiment, 15.95 g of copper sulphate reacted with 8.0 g of sodium hydroxide to form 9.75 g of copper hydroxide and 14.2 g of sodium sulphate.

2.From structure, it is clear that it has 8 Cr−O bond, out of which 6 Cr−O bonds are equal.

solution

3.Explanation: When sodium chloride solution is added to lead nitrate solution then it results in the formation of a precipitate of lead chloride and sodium nitrate. The reaction equation for this chemical reaction is as follows. The precipitate lead chloride is insoluble in cold water but it is soluble in hot water.

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