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

Useful instruction for stock verification and maintenance , Useful Instruct...

Useful Instruction : You should go through of LT-1 course before doing this exercise. This exercise is a mix of demonstration and hands on activities. Take the help of your counse

Hypersecretion of adrenocortical hormones during childhood, Hypersecretion ...

Hypersecretion of Adrenocortical Hormones during Childhood Children suffering from hypersecretion of adrenocortical activity are described as Infant Hercules. There is too earl

Explain history and physical examination report in detail, Question 1 E...

Question 1 Explain History and physical examination report in detail 2 Reference materials and books are indispensable resources for the Medical transcription. Explain 3

Explain loam soil, What is loam soil? This is a type of soil, which is ...

What is loam soil? This is a type of soil, which is halfway among clay and sandy soils.

Activity to polluting this water source, Q. Do you know of any activity whi...

Q. Do you know of any activity which may be polluting this water source? Answer: The discharge of waste water from homes, industries, hospitals, etc. into the river pollutes thi

Advantages of proteins, Advantages of Proteins Proteins are compounds...

Advantages of Proteins Proteins are compounds of carbon, hydrogen, oxygen and nitrogen. On an  average, proteins contain 16% nitrogen. Most proteins also contain sulphur and

Element, how many element found in nature.

how many element found in nature.

Life of a star, Life of a Star: A young star is thought  to be composed...

Life of a Star: A young star is thought  to be composed largely of  hydrogen gas. Hence, the most likely place for a star to be born is in one of  the numerous clouds of hydrog

Arthropoda, structure and function of respiratory organs in arthropoda with...

structure and function of respiratory organs in arthropoda with diagram

Explain light source - pre-requisites of colour perception, Explain Light s...

Explain Light source - Pre-requisites of Colour Perception   No colour may be detected by the eyes or by an instrument in the dark i.e.  in the absence of a light source emitti

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