Select the correct matching in the following table in connection with the given chemical reaction : CuSO4 + Fe -→ FeSO4 + Cu Initial colour of Final colour of Final colour of Type of reaction solution solution iron nail Pale green Blue Grey Displacement (b) Blue Brownish Double displacement (c) Blue Light blue Grey Double displacement • (d) Blue Brownish Displacement Pale green Pale green
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(d) Blue - Brownish - displacement - Pale green
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(d) Blue Brownish Displacement Pale green is correct regarding chemical reaction.
- The initial colour will be of copper sulphate solution, which is blue brownish.
- The final colour of the solution is ferrous sulphate which is pale green.
- The given reaction shows the exchange of one type of ionic species, which is sulphate ions from copper to iron.
- The reaction is a single displacement reaction.
- A double displacement reaction involves the exchange of two different ions present on the reactant side.
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