Question

suggest different chemical processes used for obtaining a metal from its oxides for metals in the middle of the reactivity series . support your answer with one example

Answer 1

k
na
ca
mg
al
zn
fe
ni
sn
pb
h
cu
hg
ag
au
pt
different process are heating in presence of air mg,zn,fe,ni,sn,pb,hg,aur,pt,h and simple in presence of air like k, na,ca

Answer 2

1. For obtaining metals that are in the middle of the reactivity series, oxides of such metals can be reduced with coke (carbon) which acts as a reducing agent.

Example:

2 Fe2O3 + 3 C ----> 4 Fe + 3 CO2

2. For obtaining metals that are high in the reactivity series, their oxides are reduced to metals by the process of electrolysis.

Example: Electrolysis of sodium chloride

At cathode: Na+ + e- -----> Na

At anode: 2 Cl- ----> Cl2 + 2e-