The molten lead obtained from the blast furnace contains 0.1% of silver dissolved as an impurity. The silver is removed by:
-adding zinc to the mixture of molten lead and silver at 350'C and removing the mixture of molten zinc and silver that forms on top of the molten lead
-heating the mixture of molten zinc and silver until the zinc boils of as a gas, leaving almost pure solid silver behind.
i) what can you deduce about the relative solubility of silver and zinc and lead?
1 answer
Is it possible that in a solute of lead, silver and zinc are not very soluble