Question

Which metallic spoon can be used to stir lead nitrate solution?

Answer 1

Reaction:

• The more reactive metal will oust the less reactive metal from the solution if a metal and metal solution react.
• No reaction will happen if the starting metal in the solution is made from a metal that is more reactive than the metal that has to be added.
• This chart may be used as an alternate testing technique to determine the right sequence for the reactivity series.

• As an example, Zinc $\left(\mathrm{Zn}\right)$ reacts with Lead nitrate $\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2$, shown below:
• $\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)+\mathrm{Zn}\left(\mathrm{s}\right)\to \mathrm{Zn}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)+\mathrm{Pb}\left(\mathrm{s}\right)$
• Lead is removed from the solution by the zinc to generate zinc nitrate, indicating that zinc is more reactive than lead.
• Take Silver $\left(\mathrm{Ag}\right)$ which is less reactive than Lead $\left(\mathrm{Pb}\right)$
• $\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)+\mathrm{Ag}\left(\mathrm{s}\right)\to \mathrm{No}\mathrm{reaction}$
• Lead must be more reactive than silver because there is no reaction.

Final Answer:

Silver spoon can be used to stir lead nitrate solution