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2006-12-20 12:39:48 · 4 answers · asked by churva_char_chenes 1 in Science & Mathematics ➔ Chemistry
The mucic acid test is named for the product of the reaction.
Galactose, lactose and other carbohydrates can be oxidized by concentrated nitric acid to give mucic acid which will form crystals if the solution is allowed to stand undisturbed overnight. Mucic acid is almost insoluble in cold water.
An aldehyde group is oxidized by the nitric acid to a carboxylic group. The reaction is:
HC=O-(CHOH)4-COOH (aq) + 2 HNO3 (aq) --> HOC=O-(CHOH)4-COOH (s) + H2O (l) + 2 NO2 (g)
The initial structure of the galactose can be seen at the site below:
2006-12-23 09:09:08 · answer #1 · answered by Richard 7 · 14⤊ 0⤋
Mucic Acid
2016-11-08 21:19:55 · answer #2 · answered by ? 4 · 0⤊ 0⤋
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you will always get a salt and if the reaction is with a metaloxide or a metal carboante or a metal bicarboante or a metal hydroxide you will get water if it is just with a metal you will get hydrogen. the water is produced when the hydroxied (base) ions mix with the hydrogen ions (acid) to form water however when just a metal reacts there is not water just a salt and hydrogen gas so. metal+acid------> salt + hydrogen metal oxide+acid --------> salt + water metal carboante+ acid ---------- salt + water + carbon dioxide the salt is made up of the cation from the metal and the anion from the acid e.g sodiumchloride, magnesium sulphate, potassium nitrate.
2016-04-09 09:22:02 · answer #3 · answered by Chelsea 4 · 0⤊ 0⤋
It is an oxydation reaction, therefore
galactose + oxygen -> mucic acid
2 HOOC-(CHOH)4-CH2OH + 3 O2 -> 2 HOOC-(CHOH)4-COOH + 2 H2O
2006-12-20 22:58:44 · answer #4 · answered by cordefr 7 · 0⤊ 1⤋