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  3. 1.) an unknown carbohydrate solution tested positi

1.) An unknown carbohydrate solution tested positive with molisch reagent, formed a red precipitate with barfoed's...

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Chemistry

1.) An unknown carbohydrate solution tested positive withmolisch reagent, formed a red precipitate with barfoed's reagentwithin 3 minutes, and turned blue-green when mixed with bialsreagent. what carbohydrate is this?

2.) Erythrose is a four-carbon aldose. Describe the results oftesting it with the following reagents.

a.) Molisch

b.) Barfoed's

c.) Benedict's

d.) Seliwanoff's

Answer & Explanation Solved by verified expert
3.8 Ratings (527 Votes)
Solution1When a monosaccharide reacts with a Molisch reagent it rapidlyreacts with the Molisch reagent Disaccharides and polysaccharidesreacts slowly with Molisch reagent Also the reagent formsfurfural and derivates of furfural with pentoses and hexosesrespectivelyWhen a monosaccharide reacts with a Barfoeds reagent thealdehyde of the monosaccharide converts to the carboxylic acidoxidized by the Cu2    See Answer
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