Physical properties of amino acids, Chemistry

Assignment Help:

Physical properties of Amino acids

(a) Amino acids are colourless, crystalline substances comprising sweet taste. They melt along with decomposition at higher temperature (much more than 200°C). They are soluble in water although insoluble in organic solvents.

(b) Apart from glycine, all the α-amino acids are optically active and comprise an asymmetric carbon atom (α-carbon atom). Therefore, each of these acids may present in two optical isomers. In proteins, though, only one isomer of each is generally involved.

(c) Zwitter ion and isoelectric point : as the -NH2 group is basic and - COOH group is acidic, in neutral solution it presents in an internal ionic form known as a Zwitter ion in which the proton of -COOH group is transferred to the -NH2 group to make inner salt, as well known as dipolar ion.


Related Discussions:- Physical properties of amino acids

Objective of elements of group 16, Q. Objective of elements of group 16? ...

Q. Objective of elements of group 16? You should be able to: • describe the occurrence, extraction and uses of the elements of Group 16, • describe the allotropic forms o

Metal halide, why pcl3 is less polar than sicl4

why pcl3 is less polar than sicl4

S block, Uses of plaster of paris

Uses of plaster of paris

Artificial sweetener - chemicals in food, Artificial sweetener: The art...

Artificial sweetener: The artificial sweeteners are other kind of food additives. The very firstly admired synthetic sweetener was saccharin. It was advertised like its water s

Fblock, similarity between later actinide and later actinide

similarity between later actinide and later actinide

Explain lewis base and a nucleophile, Explain Lewis base and a nucleophile ...

Explain Lewis base and a nucleophile Species A is a. Carbon B is an electrophile. Carbon C is a leaving group towards carbon B but also a nucleophile towards carbon D. Carbon D

Chemical test, give one chemical test to distinguish the following pairs of...

give one chemical test to distinguish the following pairs of compound ethyl nitrile and nitroetane;benzamide and p-aminobenzonic acid

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