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

Law , explain law of equivalence..

explain law of equivalence..

Characteristics of tautomerism - isomerism, Characteristics of tautomerism ...

Characteristics of tautomerism (a) Tautomerism (cationotropy) is caused by the oscillation of hydrogen atom between two polyvalent atoms present in the molecule. The modificati

Number of unpaired electrons, The number of unpaired electrons in Fe 3+ (Z...

The number of unpaired electrons in Fe 3+ (Z= 26)  are: (1) 5        (2) 6        (3) 3        (4) 4 Ans: 5

Hydrocarbon, markonise and anti markonise

markonise and anti markonise

Ring chain isomerism - organic chemistry, Ring-chain isomerism: This ki...

Ring-chain isomerism: This kind of isomerism is because of different modes of linking of carbon molecules, that is the isomers process either open chain or closed chain structu

Methane emissions from landfills, From the EPA the current generation of m...

From the EPA the current generation of methane from landfills in the USA is 12.7 MM tons per year (2009). a. Using the Global Warming Potential of the methane at 20 years, 100

Acid radical., tests for mixture of acid radicals

tests for mixture of acid radicals

F block, what is the actanoid contraction

what is the actanoid contraction

Briefly explain about diffusion of gases, Q. Briefly explain about Diffusio...

Q. Briefly explain about Diffusion of Gases? Ans.  The following are some important points on the diffusion of gases: Gas molecules have an average kinetic energy

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