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CH1012
BORIC ACID
• Boron hydroxide (boric acid) is an acidic compound. It is a very weak acid, which acts not as
a proton donor but as a Lewis acid,
accepting a pair of electrons from OH:-
B(OH)3 + HOH D B(OH)4- + H+
• Borax powder Na2B4O7.10H2O (used in bug repellent,
soaps, pottery …) hydrolyzes in water to
give the equilibrium mixture shown.
• Lithium oxide Li2O is basic Period 2
• Beryllium oxide
BeO is amphoteric
(amphoteric: acidic and basic properties)
(amphoteric: acidic and basic properties)
• Boron oxide B2O3 is acidic.
