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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.
Explain the amount of Glucose in Urine Detectable amount of glucose is only found in the urine when the blood level exceeds a certain threshold value i.e., 180 mgI100 ml. In un
Please complete this assignment in Microsoft Word and turn it in as an attachment. Show all work to receive full credit. 1. Given e sw = 57mb and r = 0.5, find T LCL . 2
Define Pollutants Regulated Under the Clean Water Act? The Federal Water Pollution Control Act (FWPCA) Amendments of 1972 later amended while the Clean Water Act (CWA) organize
You can observe the buoyancy of water Make an equivalent arm balance. Secure two soda water-bottles and suspend them with loops of string from either side of the arm. Unless th
equilibrium, Physics what is the effect of torque and equilibrium on taps, doors,handle bars and bicycles??
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nature and scope
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Moisture from breathing Moisture coming from breathing might be shown by blowing on a cool mirror or into a cool glass or bottle.
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