Explain about extraction of metals, Chemistry

Assignment Help:

Q. Explain about Extraction of metals?

Extraction of metals is very often done by complex formation. For example, the cyanide process for the extraction of silver and gold is well known. Purification of metals is often accomplished by solvent extraction of neutral complexes. Commonly encountered ligands for such purposes are oxine, acac, dmg, salicylaldoxime or salicyldineimines. The role of complexes as catalysts in the production of organic chemicals is yet another field of importance. For example various complexes of copper, silver, mercury, ruthenium, cobalt etc. are known to be good catalysts for hydrogenation process [RhCI (PPh3)3], tris (tripheny1phoshine) chlororhodium(1) is one of the best known and thoroughly  investigated compounds. Similarly, oxidation, polymerisation, hydroformylation of olefins all involve the formation of complexes as intermediates. However, quite often they are not simple complexes rather they are organometallic compounds.


Related Discussions:- Explain about extraction of metals

Explain critical angle, Critical Angle: The particular angle of inciden...

Critical Angle: The particular angle of incidence at which angle of refraction becomes 90 is known as critical Angle and it is denoted by  θc

What is dipole, In polar covalent molecule, one atom gets positive charge a...

In polar covalent molecule, one atom gets positive charge and the other one takes negative charge as known as dipole.

Applications of potentiometry, Applications of potentiometry: One of t...

Applications of potentiometry: One of the most common and earliest applications of potentiometry is pH determination, and titration for the determination of electro active spe

The uncertainty principle and the concept of wave nature, The uncertainty p...

The uncertainty principle and the concept of wave nature of matter was proposed by ...... and ...... respectively: (1)  Heisenberg, de Broglie (2) de-Broglie, Heisenberg

Explain bond energy, The amount of energy released when one mole of bonds a...

The amount of energy released when one mole of bonds are formed among the corresponding gaseous atoms is known as Bond energy.

The gas constant of the ideal gas, A piston device haves 0.8 kg of an ideal...

A piston device haves 0.8 kg of an ideal gas initially at 200 kPa and 30oC. The gas is then compressed slowly in a polytropic process during which PV1.3 = constant until the volume

Electrons present in all the p-orbitals, The total number of electrons pres...

The total number of electrons present in all the p-orbitals of bromine are: (1) Five          (2) Eighteen         (3) Seventeen           (4) Thirty five Ans: Seve

Assignment, solution and collegative properties explanation

solution and collegative properties explanation

Organometallic compounds, Alkyl ligands form metal carbon σ bonds. Usually ...

Alkyl ligands form metal carbon σ bonds. Usually they occur in conjunction with other organic ligands or CO, but may be achieved on their own, as in tungsten hexamethyl (1), and

Stoichiometry, How many moles of copper will be produced from 2.00 moles of...

How many moles of copper will be produced from 2.00 moles of aluminum?

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