Question

Water transported through lead pipes becomes poisonous due to the formation of :

• A. Pb (OH)2
• B. PbO
• C. PbO2
• D. Pb3O4

Answer 1

Answer: (A)

Pb (OH)2

Answer 2

Lead slowly dissolves in water containing dissolved oxygen to form Pb(OH)2 which makes the water poisonous. Dissolution of lead in water is called plumbosolvency.

2Pb + O2 + 2H2O$\longrightarrow$2Pb(OH)2