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Answer the following questions:
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Decomposition reaction: \(2H_2O\) → \(2H_2\) + \(O_2\)
Copper sulphate solution is blue when an iron nail is dipped in it. Its blue colour changes. This happens due to the following displacement reaction.
\(Fe\) + \(CuSO_4\) blue → \(AgCl\) + \(FeSO_4\) light green + \(Cu\)
\(Fe\) + \(CuSO_4\) blue → \(AgCl\) + \(FeSO_4\) light green + \(Cu\)
1. When an iron nail is dipped in copper sulphate solution, why does the colour change?
2. What type of reactions take place when.
Electricity is passed through water.
Electricity is passed through water.
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