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Question
Discuss the dehydrating property of conc. sulphuric acid on sugar.
Short Answer
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Solution
Concentrated sulphuric acid extracts hydrogen and oxygen elements from cane sugar (sucrose).
\[\ce{C12H22O11 ->[Conc. H2SO4] 12C (Black mass) + 11H2O}\]
The crystalline sugar turns into a black, spongy mass of sugar charcoal that swells up.
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Chapter 11: Study of Compounds: Sulphuric Acid - EXERCISE [Page 222]
