Question

State whether the following statements are “true” or “false”.

Lead nitrate solution on mixing with potassium iodide solution forms green precipitates of lead iodide.

• A. True
• B. False

Answer 1

The correct option is B False

• Lead nitrate ($\mathrm{Pb}\left({\mathrm{NO}}_3\right)$) upon reaction with Potassium iodide ($\mathrm{KI}$) results in the formation of precipitates of Lead iodide(${\mathrm{PbI}}_2$) which is yellow in color and potassium nitrate(${\mathrm{KNO}}_3$) which is white in color.
• The color of lead iodide precipitates is yellow, not green
• $\underset{\mathrm{Lead}\mathrm{Nitrate}}{\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)}+\underset{\mathrm{Potassium}\mathrm{Iodide}}{2\mathrm{KI}\left(\mathrm{aq}\right)}\to \underset{\mathrm{Lead}\mathrm{Iodide}}{{\mathrm{PbI}}_2\left(\mathrm{s}\right)}+\underset{\mathrm{Potassium}\mathrm{Nitrate}}{2{\mathrm{KNO}}_3\left(\mathrm{aq}\right)}$

Hence, the given statement is false.