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

A wet and dry bulb hygrometer, A wet and dry bulb hygrometer  Get two i...

A wet and dry bulb hygrometer  Get two inexpensive thermometers, and check them in warm water at dissimilar temperatures to see that they agree. Join the two thermometers to a

Moon rotate in one day, Comment on their location in the sky (constellation...

Comment on their location in the sky (constellation, relative altitude over the horizon, etc) and track their movement above the course of the next couple of weeks, every day comme

Explain different regions of a pressure volume diagram, 1.  Sketch and expl...

1.  Sketch and explain different regions of a pressure-volume diagram of a full cardiac cycle.   2.  Sketch and explain the relationship between cardiac output and end-diastolic v

Body, how much bones are in human body?

how much bones are in human body?

Physico-chemical properties of niacin, Important physico-chemical propertie...

Important physico-chemical properties of niacin and niacinamide are as follows: a)  Niacin is a white crystalline solid. b) While niacin  is sparingly soluble in water, etha

How does the atmosphere act as a blanket, Q.How does the atmosphere act as ...

Q.How does the atmosphere act as a blanket? The atmosphere acts as a blanket by performing the following functions: (a) It keeps the average temperature of the Earth fairly c

SURVEYIN, how to overcome river in chain surveying

how to overcome river in chain surveying

Counseling, If I send you ab assignment can you finish it by midnight centr...

If I send you ab assignment can you finish it by midnight central time TONIGHT

State the mechanical analysis of soil texture, Mechanical Analysis of soil ...

Mechanical Analysis of soil texture Mechanical analysis is actually the particle size analysis which is done to determine the amount of various separates or the groups of part

Longest duration of insolation, Which latitudes and dates would coincide wi...

Which latitudes and dates would coincide with the longest duration of insolation: 50oNorth on June 21

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