1) Why does the colour of copper sulphate solution change when
an iron nail is dipped in it?
2 ) Give an example of a double displacement reaction other than
the one given in Activity 1.10.
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Answer:
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.
Answered by
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1)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.
2)AgNO3 + NaCl → AgCl + NaNO3
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