Acids and Bases

Question 1

Acid according to Arrhenius

Answer 1

A substance that produces H+ ions in water

Question 2

Base according to Arrhenius

Answer 2

A substance that produces OH- ions in water

Question 3

Strong acid

Answer 3

Ionise completely in water to produce a high concentration of H3O+ ions

Eg. HCL, H2SO4 or HNO3

Question 4

Weak acid

Answer 4

Ionise incompletely in water to form a low concentration of H30+ ions

Eg. ethanoic acid, oxalic acid

Question 5

Strong base

Answer 5

Dissociate completely in water

eg. NaOH, KOH

Question 6

Weak base

Answer 6

Dissociates/ionises incompletely in water to form a low concentration of OH- ions

eg. ammonia, calcium carbonate, potassium carbonate, sodium hydrogen carbonate

Question 7

Acid according to Lowry-Bronsted

Answer 7

Proton (H+) donor

Question 8

Base according to Lowry-Bronsted

Answer 8

Proton (H+) acceptor

Question 9

Concentrated Acid/Base

Answer 9

Large amount (number of moles) of Acid or base in proportion to volume of water

Question 10

Dilute Acid or base

Answer 10

Small amount (number of moles) of Acid/base in proportion to volume of water

Question 11

Amphiprotic

Answer 11

Substance that can act as an acid or base