Lead pipes are not suitable for drinking water because

Lead pipes are not suitable for drinking water because
  1. lead forms basic lead carbonate
  2. lead reacts with water containing air to form $\mathrm{Pb}(\mathrm{OH})_{2}$
  3. a layer of lead dioxide is deposited over pipes
  4. lead reacts with air to form litharge

Solution

$2 \mathrm{~Pb}+2 \mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2} ightarrow 2 \mathrm{~Pb}(\mathrm{OH})_{2}$

Asked in: JEE-TOPICTESTS-CHEMISTRY

Practice more P-BLOCK ELEMENTS GROUP 13 & 14 questions on Aicharya