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

The following set of quantum numbers is possible, Which of the following se...

Which of the following set of quantum numbers is possible: (1) n=3, l=2, m=2,and s = +1/2  (2) n=3, l=4, m=0,and s = -1/2            (3) n=3, l=2, m=2,and s = +1/2  (4

Why p-nitro toluene is higher boiling point , Why p-nitro toluene is higher...

Why p-nitro toluene is higher boiling point than o-nito toluene ?   Ans) The term hydrogen bonding is used to define dipole-dipole attractive forces of this type. The proton invol

What are independent and dependent variables, Q. What are Independent and d...

Q. What are Independent and dependent variables? An experiment is a set of controlled explanation that tests a hypothesis. In a research a scientist will set up and change on

Explain hybrid rocket propellants, Explain the following and give one examp...

Explain the following and give one example of each: a. Tranquillizers b. Mordant c. Hybrid rocket propellants

What are the physical properties of solids?, Q. What are the physical prope...

Q. What are the physical properties of solids? Ans. Most solids eventually melt when heated. This is because the particles gain enough energy to exceed the attractive for

Explain the illustration of mixture experiment, Strategy 2 The wheat f...

Strategy 2 The wheat flour amount is fixed at 3940g, but that of the active ingredients is varied from 30 to 60 g with the ratio of A : B : C fixed at 3:2:1. The combinations

Matter, name any 10 chemical compound used at homewith their molecular form...

name any 10 chemical compound used at homewith their molecular formula

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