Question

161 A precipitation reaction is one in which two soluble reactants form an insoluble product. The insoluble product is a solid which usually sinks to the bottom of the liquid. The table shows the solubility of the compounds that form when some chemicals react. The compounds that are soluble are marked with a tick (V). The compounds that are insoluble are marked with a cross (x). Carbonate Chloride Hydroxide Nitrate Sulphate Barium V ✓ X Lead xx v x Mercury Potassium v ✓ V Sodium V Which of the following word equations represents a precipitation reaction? a) Sodium nitrate + Barium chloride Sodum chloride + Barium nitrate b) Mercury sulphate + Potassium nitrate → Mercury nitrate + Potassium sulphate c) Potassium sulphate + Barium Hydroxide Potassium hydroxide + Barium sulphate 1) Potassium chloride + Sodium hydroxide Potassium hydroxide + Sodium chloride​

Answer 1

Answer:

Precipitation reactions occur when cations and anions in aqueous solution combine to form an insoluble ionic solid called a precipitate. Whether or not such a reaction occurs can be determined by using the solubility rules for common ionic solids. Because not all aqueous reactions form precipitates, one must consult the solubility rules before determining the state of the products and writing a net ionic equation. The ability to predict these reactions allows scientists to determine which ions are present in a solution, and allows industries to form chemicals by extracting components from these reactions.

Explanation:

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