Question

The residue left on dehydration of glucose by concentrated sulphuric acid​

Answer 1

Answer:

Sulfuric Acid and Sugar Demonstration (Sugar Dehydration)

It's the dehydration of sugar (sucrose) with sulfuric acid. ... The sulfuric acid removes water from the sugar in a highly exothermic reaction, releasing heat, steam, and sulfur oxide fumes. Aside from the sulfurous odor, the reaction smells a lot like caramel.

Answer 2

● After dehydration of glucose by concentrated sulphuric acid the product will be a black colour Residue.

● The reaction of dehydration of glucose is a a exothermic reaction where large amount of heat is generated.

● Along with heat carbon dioxide is is liberated which is released with steam and sulphur oxide fumes.