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

Help!, How do you know if a property is extensive or intensive?

How do you know if a property is extensive or intensive?

The structure of spiropentadiene, The structure of spiropentadiene The ...

The structure of spiropentadiene The structure of spiropentadiene is shown below; it undergoes a Diels-Alder reaction with two molar equivalents of 1,3-cyclopentadiene. Spirope

Which of the following oxides nitrogen is isoelectronic co2, Which of the f...

Which of the following oxides of nitrogen is isoelectronic with CO 2: (1) No 2                 (2) N 2 O    (3) NO                (4)N 2 O 2 Ans:  N 2 O

Equivalent weight, how to calculate equivalent weight of given substance? l...

how to calculate equivalent weight of given substance? like K2C2O2.H2O

Why octahedral complexes of ni+2 must be outer orbitals?, The coordination ...

The coordination number of Ni in the complex is 4, the configuration of Ni +2 , at first sight, shows that the complex is formed by sp 3 hybridization  and it is paramagnetic an

Octahedral-and-tetrahedral-voids, How many octahedral and tetrahedral voids...

How many octahedral and tetrahedral voids are present in HCP? Ans) octa -no of atoms prsnt ,nd tetra -twice of it.

Equivalent weight, what is the equivalent weight of Ca in Ca3(PO4)2?

what is the equivalent weight of Ca in Ca3(PO4)2?

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