Q. 265.0( 1 Vote )

Explain
i) Why su

Answer :

i) Conc.H2SO4 is a dehydrating agent. Sugar is C12H22O11. When conc. H2SO4 reacts with sugar, it removes hydrogen and oxygen atoms from the sugar molecules in the form of water, leaving behind carbon. So sugar becomes black or get charred with conc. H2SO4. C12H22O11 12C(s) + 11H2O(l)ii) Blue colour of crystalline copper sulphate is due to five water molecules of hydration in CuSO4 5H2O.

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