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Give a reason to support that sulphuric ...

Give a reason to support that sulphuric acid is a dehydrating agent.

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Sulphuric acid is highly soluble in water and has strong affinity towards water and hence it can be used as a dehydrating agent. When dissolved in water it forms mono `(H_(2)SO_(4). H_(2)O)` and di `(H_(2)SO_(4).2H_(2)O)` hydrates and the reaction is exothermic.
The dehydration property can also be illustrated by its reaction wiht organic compounds such as sugar, oxalic acid and formic acid.
`underset("(Sucrose)")(C_(12)H_(22)O_(11))+H_(2)SO_(4)rarr 12C+H_(2)SO_(4).11H_(2)O`
`underset("(Formic acid)")(HCOOH+H_(2)SO_(4))rarr CO+H_(2)SO_(4).H_(2)O`
`underset("(Oxalic acid)")((COOH)_(2))+H_(2)SO_(4)rarr CO+CO_(2)+H_(2)SO_(4).H_(2)O`
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