Question

Is Cellulose ketohexose or aldohexose? How does Cellulose give result in Seliwanoff’s test (any color change)?

Answer 1

Answer:

Cellulose is an aldohexose

Explanation:

Cellulose is an aldohexose  , because , it has an aldehyde group present at one of the end .

Seliwanoff’s test

It is the test to differentiate between a ketose and an aldose .

The test is as follows -

If the sample is heated and it it readily gets dehydrated , then the sample is a ketose .

And , the reaction of   Seliwanoff’s reagent and  ketose , give a red color , which is the positive sign for the test .

But ,

the reaction of   Seliwanoff’s reagent and  aldoses , give a very light pink color .