Question

what are examples of precipitation reaction

Answer 1

Hope it helps!!!!!

1) Reaction of lead nitrate and Potassium iodide.
   
Pb(NO3)2  +  2 KI  =  PbI2​ ↓  +  2 KNO3 

2) Reaction of Silver nitrate and Sodium Chloride.
   
AgNO3  +  NaCl  =  AgCl ↓ +  NaNO3


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Answer 2

There are some chemical reactions in which a solid get separated from the solution these reactions are called precipitation reaction.

The departed solid is called precipitate.

Examples :

a) Sodium chloride + Silver nitrate ---> Silver chloride + Sodium Nitrate.

b) Barium chloride + Sodium sulphate ---> Barium Sulphate⬇ + Sodium Chloride.