Statues coated with white lead turn black on exposure to air Its original colour is restored on treatment with H_2O_2. Explain.

Statues coated with white lead turn black on exposure to air Its origi

1.	Statues coated with white lead turn black on exposure to air Its original colour is restored on treatment with H_2O_2. Explain.
Answer» SOLUTION :Statues turn black DUE to the formation of lead sulphide. Hydrogen PEROXIDE oxidises black COLOURED lead sulphide to white coloured lead sulphate, there by restoring the COLOUR. `PbS+4H_2O_2toPbSO_4+4H_2O`