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

Series limit for balmer series of h-spectra, The series limit for Balmer se...

The series limit for Balmer series of H-spectra is: (1) 3800          (2) 4200         (3) 3646                (4) 4000 Ans:  3646

Maximum number of electrons present in n, Maximum number of electrons prese...

Maximum number of electrons present in N  shell is: (1) 18              (2) 32        (3) 2              (4) 8 Ans: 32

Evaluate the entropy change, A house is air conditioned using solar energy....

A house is air conditioned using solar energy.  Solar radiation heats a pressurized tank such that the temperature is maintained at 175 o C.  1500 kJ must be extracted from the hou

Mole concept, The difference in the mass of 100 moles of sodium atoms and s...

The difference in the mass of 100 moles of sodium atoms and sodium ions is 5.48002grams .compute the mass of an electron

Valence Bond Theory, What are the limitations of valence bond theory?

What are the limitations of valence bond theory?

1, Briefly tell me about chemical combination and its laws

Briefly tell me about chemical combination and its laws

Structure of proteins - biomolecules, Structure of proteins The struct...

Structure of proteins The structure of proteins is extremely complex. The basic structure of a protein considers to the number and sequence of the amino acids in its polypeptid

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