Class 10 Science Chemical reaction and Equation: NCERT Solutions for Question 2
Give an example of a double displacement reaction other than the one given in activity 1.10.
Pb(NO3)2 (aq) + 2KI (aq) → PbI2 (s) + 2KNO3 (aq)
Lead Nitrate Potassium Iodide Lead Iodide Potassium Nitrate
When the aqueous solution of lead Nitrate is mixed with potassium Iodide, we obtain a precipitate of lead iodide and a solution of potassium nitrate. In double ddisplacement reaction their is exchange of ions between the reactant. In this reaction, the cation Pb2+ and K+ exchange their anions NO3- and I- to give new substance PbI2 and KNO3.
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