Question

In given diagram Iron nail placed in copper sulphate solution, after sometime test tube material look like as second test tube. (a) Name the brown substances deposited on iron nail. (b) why the colour of the solution change from blue to green? (c) Name the type of reaction.


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Answer 1

Answer:

(a) Copper

(b)When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.

(c)(Fe2+) and cupric ion (Cu2 +) is converted into metallic copper. Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s).

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Answer 2

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