What is the electrometallurgy, Chemistry

Assignment Help:

Q. What is the Electrometallurgy?

The above two metallurgical processes, namely pyrometallurgy and hydrometallurgy can be used in the extraction of a fairly large number of metals. These processes, thus, cannot be used in cases:

  • Where the metal is extremely reactive, e.g., Li, Na, etc. There are not any chemical-reducing - agents strong enough to make these metals
  • Where the oxide gets reduced only at high temperatures at which preparation of carbides also takes place, e.g., Mg, Al, etc.

In these cases, metals can be extracted by electrolysis of their salts in molten state. Thus, magnesium and sodium are generated by electrolysis of fused chlorides, where the metals re Iiberated at the chlorine and cathode gas is evolved at the anode. Given reactions take place in the mean while electrolysis:

Anode: 2Cl- ---------> Cl2 (g) + 2e

Cathode: 2Na+ 2e ------> 2Na (l)

Mg2+ + 2e---------------> Mg (l)

523_What is the Electrometallurgy.png


Related Discussions:- What is the electrometallurgy

Branched chain polymers - classification of polymers, Branched chain polym...

Branched chain polymers -  Classification of polymers These are polymers where the monomers are connected to make long chains with side chains or branches of dissimilar sizes.

Correct ground state electronic configuration chromium atom, The correct gr...

The correct ground state electronic configuration of chromium atom is: (1) [Ar] 3d 5 4s 1                (2)[Ar]3d 4 4s 2      (3) [AR]3d 6 4s 0                (4

For a given value of quantum number, For a given value of quantum number l ...

For a given value of quantum number l , the number of allowed values of is given by: (1) l+2                   (2)  2l+2 (3)  2l+ 1                               (4)

Volumetric anayalsis, How Ostwald''s theory and quininoid theory explain th...

How Ostwald''s theory and quininoid theory explain the action of indicators

Nuclear chemistry, Ask question #Minimum 100 wowhat are isobarsrds accepted...

Ask question #Minimum 100 wowhat are isobarsrds accepted#

Rate of reaction in zero order , Why rate of reaction in zero order is inde...

Why rate of reaction in zero order is independent of concentration? Solution) Where r is the reaction rate and k is the reaction rate coefficient with units of time / concentrat

Explain primary processing of cereals, Normal 0 false false ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Metal-metal sparingly soluble electrodes.., which one will be chosen as cat...

which one will be chosen as cathode, Ag/Ag+ or Ag/Agi/i

ELECTROPHORESIS, PRINCIPLES,GENERAL PROCEDURE,PURO POSES FOR ELECTROPHORESI...

PRINCIPLES,GENERAL PROCEDURE,PURO POSES FOR ELECTROPHORESIS

Find the pressure in the droplet, Q. The pressure in a liquid droplet of ra...

Q. The pressure in a liquid droplet of radius r is greater than the pressure of the surrounding equilibrated gas phase by a quantity 2 =r, where is the surface tension. (a) Cons

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd