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

Define statement when electron is not equally determined, The position and ...

The position and velocity of a small particle like electron cannot be simultaneously determined." This statement is: (1)  Heisenberg uncertainty principle (2)  Principle of

Determine spherical symmetry, A filled or half-filled set of p or d  -orbit...

A filled or half-filled set of p or d  -orbitals is spherically symmetric. Point out the species which has spherical symmetry: (1) Na                    (2) C

Estimate the enthalpy of fusion of sulphuric acid, In the industrial produc...

In the industrial production of sulphuric acid, SO 3 is carefully reacted with water: SO 3 + H 2 O → H 2 SO 4 any excess SO 3 giving rise to what is called oleum, a solut

What are properties of ideal electrical insulating material, What are prope...

What are properties of an ideal electrical insulating material? The following are properties of an ideal (electrical) insulating material: (i)  Low  dielectric  court(high  die

What is carcinogenic substance?, A carcinogen is any substance,  radiation ...

A carcinogen is any substance,  radiation or radionuclidethat is an agent directly involved in causing cancer. This may be due to the ability to break the genome or to the disrupti

Disinfectants - chemistry in action, Disinfectants: The chemical substa...

Disinfectants: The chemical substances that are employed to kill microorganisms although they cannot be applied on living tissues are known as disinfectants. Hence, disinfectan

The ratio of the energy of a photon & wavelength radiation, The ratio of th...

The ratio of the energy of a photon of 2000Å  wavelength radiation to that of 4000 Å    radiation is: (1) 1/4           (2) 4       (3) 1/2              (4) 2 Ans

Surface chemistry, calculate the surface coverage obtained after exposure t...

calculate the surface coverage obtained after exposure to a pressure of 10 torr of CO for 20s at 300K. sticking probability of CO is 0.9

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