give a reason why concentrated and not dilute sulphuric acid behaves as an oxidizing and a dehydrating agent
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dilute contains some %age of water
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Concentrated sulphuric acid behaves as a strong dehydrating agent as the hydration reaction is highly exothermic. It has strong affinity for water removing water molecules from other compounds.
It has a strong oxidising property as when it reacts with metals produces sulphur dioxide,water and sulphate ions while dilute sulphuric acid produces hydrogen and salt.
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