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Chemistry

Grade 11: Acid and Bases

TermDefinition
Arrhenius theory acid An acid is a substance that produces hydrogen ions (H+)/hydronium ions (H3O+) when it dissolves in water.
Arrhenius theory base A base is a substance that produces hydroxide ions (OH-) when it dissolves in water.
Lowry-Brønsted theory acid An acid is a proton/H+ ion donor.
Lowry-Brønsted theory base A base is a proton/H+ ion acceptor.
Ampholyte A substance that can act as either acid or base.
Kw The equilibrium constant for the ionisation of water or the ion product of water or the ionisation constant of water, i.e. Kw = [H3O+][OH-] = 1 x 10-14 by 298 K.
Auto-ionisation of water The reaction of water with itself to form H3O+ ions and OH- ions.
Created by: StiKManLabs
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