Salts

What is a precipitation reaction?

a chemical reaction in aqueous solution where two soluble ionic compounds combine to form an insoluble solid product called a precipitate

What products in a precipitation reaction are always soluble?

→ Group 1 Alkali metals

→ Ammonium (NH4+)

→ Nitrates (NO3-)

What reactants are generally soluble in a precipitate reaction?

→ Any halides with the exception of silver, lead or mercury

→ Sulphates are often soluble unless paired with: Barium, Strontium, Calcium, lead or mercury

→ Hydroxides and Sulfides only when paired with group 1 or group 2 metals

→ Carbonates and Phosphates only when paired with ammonium or group 1 metals

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