Question

good afternoon guys......

by what chemical processes do you obtain following metals:-

(i). mercury from hgo
(ii) iron from Fe2O3
(iii) magnasese from MNO
(iv) sodium from NaCl
(v) aluminium from Al2O3

please answer fast fast​

Answer 1

$\huge\star{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}⋆$

$~~~~~~~~~~~~~\sf\blue{1. Mercury \:from \:HgO}$

Mercury from mercuric oxide can be obtained by simply heating .

$~~~~~~~~~~~~\sf\blue{2HgO \longrightarrow 2Hg + O_{2}}$

$~~~~~~~~~~~~~$

$~~~~~~~~~~~~\sf\red{2. Iron \:from \:Fe_{2}O_{3}}$

Iron from iron oxide $Fe_{2}O_{3}$can be obtained by carbon reduction method

$~~~~~~~~~~~\sf\red{2C + O_{2} \longrightarrow 2CO}$

i.e heating with coke

$~~~~~~~~~~~\sf\red{Fe_{2}O_{3} + 3CO \longrightarrow 2Fe + 3CO_{2}}$

$~~~~~~~~~~~~~$

$~~~~~~~~~~~\sf\green{3. Manganese \:from \:MnO_{2}}$

Manganese from manganese dioxide is obtained by alumino thermite process i.e heating with aluminium

$~~~~~~~~~~~\sf\green{2MnO_{2} + 4Al \longrightarrow 2Al_{2}O_{3} + 3Mn}$

$~~~~~~~~~~~~~$

$~~~~~~~~~~~\sf\purple{4. Sodium \:form \:NaCl}$

Sodium from Sodium chloride is obtained by electrolytic reduction (electrolysis) of fused NaCl

$~~~~~~~~~~~\sf\purple{NaCl \rightleftharpoons Na^{+} + Cl^{-}}$

At anode $~~~~~~~~\sf\purple{2Cl^{-} \longrightarrow Cl_{2} + 2e^{-}}$

At cathode $~~~~~~~\sf\purple{2[Na^{=} + e^{-} \longrightarrow Na]}$

$~~~~~~~~~~~~~$

$~~~~~~~~~~\sf\orange{5. Aluminium \:from \:Al_{2}O_{3}}$

Aluminium from Aluminum oxide is obtained by electrolytic reduction (electrolysis) of fused $Al_{2}O_{3}$

$~~~~~~~~~~~\sf\orange{Al_{2}O_{3} \rightleftharpoons 2Al^{3+} + 3(O)^{2-}}$

At anode $~~~~~~~~\sf\orange{6O^{2-} \longrightarrow 3O_{2} + 12e^{-}}$

At cathode $~~~~~~\sf\orange{4[2Al^{3+} + 6e \longrightarrow 2Al]}$

Answer 2

Answer:

a) simple heating

b) carbon reduction

c) alumino thermite process

d) electrolytic reduction

e) electrolytic reduction