Question

iron nail dipped in copper sulphate solution ,changed it colour to brown. write a balanced chemical equation for this reaction
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Answer 1

Answer:

The colour of copper sulphate solution changes when an iron nail is dipped in it because iron is more reactive than copper.

A substance which releases { H }^{ + }H+ ions are called acids.

When an "iron nail" dips into the solution of "copper sulphate" than iron, the copper sulphate displaces copper because "iron" is "more reactive" than "copper".

Hence the colour of the solution for copper sulphate changes.

The chemical reaction is as follows.

Fe(s)\quad +\quad Cu{ SO }_{ 4 }(aq)\quad \rightarrow \quad Fe{ SO }_{ 4 }(aq)\quad +\quad Cu(s)Fe(s)+CuSO4(aq)→FeSO4(aq)+Cu(s)