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

Why iodide ion is a good nucleophiles, Iodide ion is a good nucleophiles ...

Iodide ion is a good nucleophiles Because iodide ion is a good nucleophiles and the trimethyloxonium ion is an good alkylating agent, alkylation of  the iodide ion occu

Properties of unsaturated halides (halo-alkene), Properties of Unsaturated ...

Properties of Unsaturated halides (Halo-alkene) Halo-alkene is a colourless gas at room temperature. The boiling point of it is -13°C. The halogen atom in vinyl chloride is not

Infrared and nuclear magnetic resonance spectroscopy, The following sequenc...

The following sequence of reactions was used to synthesis compound F. In the first three steps, compound C is produced which is then used in the final step to form the final produc

Define elements and compounds, Q. Define Elements and Compounds? Pure s...

Q. Define Elements and Compounds? Pure substances are categorized into two categories that are elements and compounds. An element is a substance that can't be separated into

How will you convert ethanoic acid into methanamine?, CH 3 COOH ( ethanoic ...

CH 3 COOH ( ethanoic acid)  + NH 3 ------------ > CH 3 COONH 4   + (HEAT) ---------- > CH 3 CONH 2 (methyleamine) + H 2 O

Illustrate matter, Matter is anything that has mass and takes up space. The...

Matter is anything that has mass and takes up space. The term matter refers to all the materials, or "stuff," making up the universe. Everything you see around you is matter. The c

Caustic embrittlement, Caustic Embrittlement: Caustic embrittlement is a t...

Caustic Embrittlement: Caustic embrittlement is a type of boiler corrosion caused by using highly alkaline water in the boiler. During softening process by lime-soda processes, fr

Explain about the defect breakdown, Explain about the Defect breakdown ...

Explain about the Defect breakdown It is because of cracks and pores at the surface. Moisture from atmosphere can collect on the surface and result in breakdown. Glazing is

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