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

The formation of energy bonds in solids are in accordance, The formation of...

The formation of energy bonds in solids are in accordance with: (1) Heisenberg's uncertainty principle   (2)Bohr's theory (3 )Ohm's law (4) Rutherford's atomic model

Lanthanides and actinides, can you describe how the valance shell electron ...

can you describe how the valance shell electron configuration affectst the reactivity of the elements in the lanthanides and actinides series?

Periodic table, Alkali metals belong to S-block ? why?

Alkali metals belong to S-block ? why?

De-broglie wavelength associated with a particle of mass, The de-Broglie wa...

The de-Broglie wavelength associated with a particle of mass  10 -6 kg moving with a velocity of 10 ms -1 , is: (1) 6.63 x 10 -22 m                (2) 6.63 x 10 -29 m

Electrolysis, discuss the concentration of cations in the solution copper ...

discuss the concentration of cations in the solution copper sulphate and zinc sulphate

Liebermann nitroso reaction, Liebermann's nitroso reaction While pheno...

Liebermann's nitroso reaction While phenol is reacted with NaNO 2 and concentrated H 2 SO 4 , it provides a deep green or blue colour which changes to red on dilution with wa

Acids and bases, what is the difference between acids, bases and alkalis?

what is the difference between acids, bases and alkalis?

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