A down arrow (↓) or (s) are symbols that are used to represent the precipitation product produce in the reaction.
- Precipitation can be defined as a chemical reaction when two reactants solids or liquids or gases when combine together in a solution they produce an insoluble mass of solid called as precipitate.
- A precipitation reaction occurs when two solutions containing distinct salts having cation and anion pair together to form an insoluble salt called precipitate.
- When aqueous silver nitrate or (AgNO3) reacts with the potassium chloride or (KCl) solution then a white colored solid precipitate of silver chloride or (AgCl) forms, which can be represented by a symbol of (s) in the reaction equation.
AgNO3 (aq) + KCl (aq) → AgCl (s) + KNO3(aq)
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