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Pb(NO3)2(aq)+2KCl(aq)2KNO3(aq)+PbCl2(s)

When lead nitrate solution is mixed with potassium chloride solution, a precipitate of lead chloride and potassium nitrate solution are formed. This type of reaction is called _________________.

 



A

Combination

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B

Decomposition

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C

Displacement

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D

Double displacement 

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Solution

The correct option is D

Double displacement 


Pb(NO3)2(aq)+2KCl(aq)2KNO3(aq)+PbCl2(s)

In the above reaction, Pb2+ from Pb(NO3)2  displaces K+ from KCl and forms insoluble solid PbCl2 . Similarly, K+ from KCl displaces Pb2+ from Pb(NO3)2 to form KNO3 solution. The ions (Cations) are exchanged between the reactants.Hence this reaction is called double displacement reaction.

General representation: AB+CDAD+CB


Chemistry

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