Question

Identify the type of reactions taking place in the following case and write the balanced chemical equation for the reaction:

Potassium iodide reacts with Lead nitrate to produce Potassium nitrate and lead iodide.

Answer 1

Part 1: Double displacement reaction:-

• A double displacement reaction is a chemical process in which ions are exchanged between the two reactants.

Part 2: Identify the sort of reaction :-

• Potassium iodide reacts with lead nitrate to produce potassium nitrate and lead iodide. The reaction can be expressed as follow:
• $\underset{\mathrm{Potassium}\mathrm{iodide}}{2\mathrm{KI}(\mathrm{aq}.)}+\underset{\mathrm{Lead}\mathrm{nitrate}}{\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2(\mathrm{aq}.)}\to \underset{\mathrm{Potassium}\mathrm{nitrate}}{2{\mathrm{KNO}}_3(\mathrm{aq}.)}+\underset{\mathrm{Lead}\mathrm{iodide}}{{\mathrm{PbI}}_2\left(\mathrm{s}\right)}$
  
• Hence reaction of lead nitrate with Potassium iodide is an example of a double displacement reaction.