(A) $ + $ BC $ \rightarrow $ AC $ + $ B ii) (AB $ + $ CD $ \rightarrow $ AC $ + $ BD
Identify the types of reaction mentioned above in (i) and (ii). Give one example for each type in the form of a balanced chemical equation.

[3 Marks]

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Solution

Solution:
i) It is a single displacement reaction since the more reactive metal (A) displaces the less reactive metal (B) from its compound.
[0.5 Marks]

ii) It is a double displacement reaction since an exchange of ions takes place between the reactants.
[0.5 Marks]

a) Example of single displacement reaction:
$F e (s) + C u S O_{4} (a q) \to F e S O_{4} (a q) + C u (s)$
Iron displaces copper from the copper sulphate solution to form ferrous sulphate and copper.
[1 Mark]

b) Example of double displacement reaction:
$N a_{2} S O_{4} (a q) + B a C l_{2} (a q) \to B a S O_{4} (↓) + 2 N a C l (a q)$
[0.5 Marks]
Exchange of ions takes place between sodium sulphate and barium chloride resulting in forming barium sulphate precipitate and sodium chloride solution.
[0.5 Marks]

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(A) \( + \) BC \( \rightarrow \) AC \( + \) B ii) (AB \( + \) CD \( \rightarrow \) AC \( + \) BD Identify the types of reaction mentioned above in (i) and (ii). Give one example for each type in the form of a balanced chemical equation. [3 Marks]

(A) \( + \) BC \( \rightarrow \) AC \( + \) B ii) (AB \( + \) CD \( \rightarrow \) AC \( + \) BD
Identify the types of reaction mentioned above in (i) and (ii). Give one example for each type in the form of a balanced chemical equation.

[3 Marks]