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

Explain the term liming - decreasing soil acidity, Explain the term Liming ...

Explain the term Liming - Decreasing Soil Acidity Acid soils can be managed in two ways, viz. either by growing crops suitable for particular soil pH or by treating the soils w

Food chain, Food Chain: As you know from the discussion of the previous...

Food Chain: As you know from the discussion of the previous subsection, one of  the ways in which the organisms are  related is through food, that is, one organism becomes food

Body, how much bones are in human body?

how much bones are in human body?

Experiment of a balance barometer, A balance barometer This device depe...

A balance barometer This device depends on the fact that dry air is heavier than moist air at the similar temperature. Two equal cylinders (tin cans would do) are mounted, o

Why rainfall is imprtant factor in active soil formation, Why Rainfall is i...

Why Rainfall is imprtant factor in active soil formation Of the various climatic elements that take part in active soil formation, rainfall or precipitation is the most importa

Explains osmotic pressure – functions of plasma proteins, Explains Osmotic ...

Explains Osmotic Pressure – Functions of plasma proteins Plasma proteins exert an osmotic pressure of 25 mm Hg, which helps in maintaining plasma volume. The osmotic pressure e

Asthma, what are the systems that are affected by asthma

what are the systems that are affected by asthma

Discuss about the hydrometer method to determine soil, Discuss about the Hy...

Discuss about the Hydrometer Method to determine soil Bouyoucos devised a simple and rapid technique using a specially designed hydrometer to determine sand, silt and clay cont

Requirements for sterilization of glassware , Requirements Glassware li...

Requirements Glassware like flask, petri plates, test tubes, pipettes isi infect ant Cleaning brush Liquid soap solution Bucket Enamel tray/steel tray Aluminium

Treatment and disposal scope of first aid, Treatment: First aid treatment ...

Treatment: First aid treatment is a set of actions taken to preserve life of the casualty, prevent the conditions from becoming worse and promote his/her recovery. Disposal:

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