Physico-chemical properties of ascorbic acid, Science

Assignment Help:

Ascorbic acid possesses following important physico-chemical properties:

a)  It  is a white crystalline  substance.

b)  It  is freely soluble in water.

c)  Solution of the vitamin tastes sour.

d)  In  dry condition  it is stable in air and light.

e)  It  is fairly stable in cold acid solution.

f)  In an aqueous medium, particularly alkaline, it is easily oxidized on exposure to heat, light and traces of metals such as copper or silver.

g)  It  is easily destroyed during cooking.

h)  The compound  is a powerful  reducing agent and can  reduce fehling's solution. This is due to the presence of en01 group (carbons 2 and 3) in  its structure. (You have already learnt about the enol group in the carbohydrate Unit  I).

i)  Vitamin  C  also reduces  2,  6-dichlorophenolindophenol  to a colourless  leuco compound. This reaction  is very commonly utilized  for chemical  estimation of the vitamin.

 


Related Discussions:- Physico-chemical properties of ascorbic acid

Geocentric theory , .How did the geocentric theory change over time as incr...

.How did the geocentric theory change over time as increased scientific knowledge led to increased consensus within the scientific community?.

Requirements for stock verification and maintenance , REQUIREMENTS 1. S...

REQUIREMENTS 1. Stock register of a science laboratory 2. Loose paper sheets 3. Pen 4. Pencil 5. Rubber

Spinal cord, Spinal Cord: The spinal  cord extends downwards from the  ...

Spinal Cord: The spinal  cord extends downwards from the  brain stem through the  protecting bony rings called vertebrae down the  centre of  the backbone, to the bottom of the

Moisture evaporates from soil, Moisture evaporates from soil Fill a flo...

Moisture evaporates from soil Fill a flower pot with moist soil and place it on a pair of scales. Either balances the pot of soil with weights or observe its weight. Observe it

Concentration of solution, how many ethyl alcohol are present in a 50 ml bo...

how many ethyl alcohol are present in a 50 ml bottle of 70% rubbing alcohol solution?

Help with DNA and SNP, Hello! I have some questions related to biotechnolog...

Hello! I have some questions related to biotechnology; study in DNA and SNPs. Any ideas for a way to cure schizophrenia, using the knowledge of SNPs? And can you tell me, if it is

Technical developments in feudal society , Technical Developments in Feudal...

Technical Developments in Feudal Society: Other innovations used and improved by  the Europeans were the lenses  and the spectacles. This gave an  impetus to the further study

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