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- What is the purpose of adding conc. in Molisch’s test?</
What is the purpose of adding conc. in Molisch’s test?
To dehydrate carbohydrates to form furfural and its derivatives
To hydrolyze carbohydrates to form glucose and fructose
To oxidize carbohydrates to form carboxylic acids
To reduce carbohydrates to form alcohol
Answers (1)
In Molisch's test, the addition of concentrated sulfuric acid to the carbohydrate solution serves to dehydrate the carbohydrates to form furfural and their derivatives. The reaction mechanism involves the removal of water molecules from the carbohydrates by the concentrated sulfuric acid, which leads to the formation of an aldehyde group.
For example, glucose can be dehydrated to form furfural as follows:
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