i. Giving one example of each, explain how the following metals are obtained from their compounds by the process of reduction.
a. Meta ‘A’ which is low in the activity series of metals.
b. Metal ‘B’ which is in the middle of the activity series of metals.
ii. What is meant by refining of metals? In the electrolytic refining of metal M, name the cathode, anode and the electrolyte.
i. a. Metals like gold and silver present low in the activity series are extracted from their oxides by heating in air alone.
b. Metals like zinc and iron which are present in the middle of the series can be obtained by reduction with carbon.
ii. The removal of impurities from reduced metals is called refining.
In electrolytic refining of M:
Cathode: Strip of pure metal M
Anode: Impure metal M
Electrolyte used: A solution of the metal salt M