Why is sodium carbonate a basic salt? Write the chemical reaction.
[2 Marks]

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Solution

The salt formed by weak acid and a strong base is basic in nature. Sodium carbonate is formed by the combination of Sodium hydroxide (strong base) and carbonic acid (weak acid). Hence, it is basic in nature.
[1 Mark]
The chemical reaction is represented as;

H₂CO₃(aq) + 2NaOH(aq) → Na₂CO₃(aq) + 2H₂O(l) [1 Mark]

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Sodium carbonate is a basic salt because it is the salt derived from-

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