Question

2.
Give an example of a double displacement reaction other than
the one given in Activity 1.10.
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Answer 1

Explanation:

Double Displacement : A reaction in which their is a exchange of ion between the rectants is called double displacement.

example : Na2 SO4 + BaCl -----NaCl + BaSO4

Pb(NO3)2 + KI ----- PbI2 + KNO3

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Answer 2

Na2Sl+2HCl -> 2NaCl+H2S

eg of double displacement reaction.

I think so your question is incomplete.