Q6 of 35 Page 42

What do you mean by precipitation reaction? (AS1)

Precipitation reaction – When two reactants exchange their constituents chemically and form products in which one of them product is insoluble in water, the reaction takes place is called precipitation reaction.

For example: when aqueous lead nitrate and potassium iodide are mixed together, they form lead iodide which is insoluble in water. Lead iodide is called precipitate. The reaction is:


Pb(NO3)2 + KI → PbI2 + 2KNO3


precipitate


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