Question

The activity which demonstrate that some chemical reactions are characterised by change in colour of the reactants. __________
please answer it......​

Answer 1

Answer:

Explanation:

Take case of CuSO4( blue colour) and Zn.

In copper sulphate solution , place zinc granules. Since zinc is more reactive than copper, it will displace copper from its sulphate and become ZnSO4 which is colourless solution, so we see a colur change

               CuSO4+ Zn===> ZnSO4+Cu

                (Blue)                   ( colourless)

The name of the reaction is displacement reaction.

Answer 2

Answer:

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Explanation:

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