Which of the following compounds forms a hydroxide when reacting with water?
A) Cl₂O
B) SiO₂
C) SO₃
D) BaO
E) N₂O₃
IMAT 2024 · Question 35
Q35 - Nomenclature of inorganic compounds
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The correct answer is D) BaO.
Metal oxides are basic and react with water to give hydroxides: BaO + H₂O → Ba(OH)₂.
All the others are non-metal oxides, which are acidic and give acids with water (SO₃ → H₂SO₄, for example). SiO₂ doesn't dissolve at all.
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