Question

A solution that absorbs hydrogen sulphide.

Answer 1

Lead Nitrate: Lead nitrate is colourless to white crystalline solid which is completely soluble in water but slightly soluble in alcohol.

• A solution which absorbs hydrogen sulphide is Lead Nitrate.
• It is an oxidizing agent which is highly toxic and categorized as probably carcinogenic to humans. The molecular or chemical formula of Lead II Nitrate is$\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2$.
• When Hydrogen sulphide is passed through lead nitrate solution following reaction takes place:
• $\underset{\mathrm{Hydrogen}\mathrm{sulphide}}{{\mathrm{H}}_2\mathrm{S}\left(\mathrm{g}\right)}+\underset{\mathrm{Lead}\mathrm{nitrate}}{\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2}\left(\mathrm{aq}\right)\to \underset{\mathrm{Lead}\mathrm{sulphide}}{\mathrm{PbS}\downarrow }+\underset{\mathrm{Nitric}\mathrm{acid}}{2{\mathrm{HNO}}_3}$(aq)