H2SO4 has great affinity for water because:
Correct answer: D. Acid forms hydrates with water
- A. It decomposes the acid
- B. It hydrolyses the acid
- C. Acid decomposes the water
- D. Acid forms hydrates with water
Explanation
Sulphuric acid is kept in air-tight bottles because if kept in the open it absorbs water vapors from the surrounding. It is a dehydrating agent. Sulphuric acid forms hydrate with water because the reaction of water and acid is highly exothermic and a great amount of heat in the form of fumes is liberated in that exothermic reaction of acid and water, acid produces stable hydrates-this shows the acid's affinity for water.
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About Acids, Bases and Salts
Acid and base behaviour is explained through the Bronsted-Lowry transfer of protons and the Lewis donation or acceptance of electron pairs. The topic includes pH, pOH, ionisation and water equilibrium, plus salt formation and hydrolysis, where a salt solution may become acidic, basic or neutral.
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