Acids and Bases (Grade 11 NSC Matric Physical Sciences): Flashcards

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Acids and Bases
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Brønsted-Lowry acid definition

Proton donor (gives away H+\text{H}^+ ions)

Brønsted-Lowry base definition

Proton acceptor (takes up H+\text{H}^+ ions)

Arrhenius acid definition

Increases H3O+\text{H}_3\text{O}^+ concentration in water

Arrhenius base definition

Increases OH−\text{OH}^- concentration in water

Amphoteric substance

Can react as either an acid or a base

Amphiprotic substance

Can act as proton donor or proton acceptor

Polyprotic acid

Acid with more than one proton available to donate

Conjugate acid-base pairs

Pairs formed when acids lose or bases gain protons

Water as amphoteric substance

Can act as acid or base depending on other reactant

Polyprotic acid examples

H2SO4\text{H}_2\text{SO}_4, H3PO4\text{H}_3\text{PO}_4

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