Question

In the process of extraction of metals, which metal oxides uses
1. carbon as reducing agent
2. aluminium for reduction

give at least 2 to 3 examples and please give the explanation along.

Answer 1

Hello there:-)

1) Metals which are to the down of metal reactivity series, their oxides are reduced by Carbon.

Examples :-

PbO + C --> Pb + CO

CuO + C --> Cu + CO

AgO + C --> Ag + CO

2) The given process is Thermite process. It is used to reduce metals such as Zn and Mn

Example :-

3ZnO + 2Al --> Al2O3 + 3Zn

3MnO2 + 4Al --> 2Al2O3 + 3Mn