give two examples of double displacement which are also precipitation reaction
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Double displacement reactions generally take place in aqueous solutions in which the ions precipitate and there is an exchange of ions. For example, on mixing a solution of barium chloride with sodium sulphate, a white precipitate of barium sulphate is immediately formed. These reactions are ionic in nature.
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- Sodium sulphate + Barium chloride ------------> Barium Sulphate (white previpitate) + Sodium Chloride
- Lead Nitrate + Potassium Iodide -------------> Lead Iodide (yellow precipitate) + Potassium Nitrate
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