Acids and Bases

Question 1

Strong acid (Arrhenius)

Answer 1

A substance that almost completely dissociates in water to give H+ ions

Question 2

Arrhenius definition of an acid

Answer 2

A substance that dissociates in water to produce H+ ions

Question 3

Weak acid (Arrhenius)

Answer 3

A substance that only slightly dissociates in water to give H+ ions

Question 4

Arrhenius definition of a base

Answer 4

A substance that dissociates in water to produce OH- ions

Question 5

Strong base (Arrhenius)

Answer 5

A substance that almost completely dissociates in water to give hydroxide (OH-) ions

Question 6

Weak base (Arrhenius)

Answer 6

A substance that only slightly dissociates in water to give hydroxide (OH-) ions

Question 7

Brønsted-Lowry definition of an acid

Answer 7

Proton donor

Question 8

Strong acid (Brønsted-Lowry)

Answer 8

Good proton donor

Question 9

Weak acid (Brønsted-Lowry)

Answer 9

Poor proton donor

Question 10

Brønsted-Lowry definition of a base

Answer 10

Proton acceptor

Question 11

Strong base (Brønsted-Lowry)

Answer 11

Good proton acceptor

Question 12

Weak base (Brønsted-Lowry)

Answer 12

Poor proton acceptor

Question 13

Conjugate acid-base pair

Answer 13

Acid and base that differ by one proton

Question 14

When does an acid change into its conjugate base?

Answer 14

When it donates a proton

Question 15

When does a base change into its conjugate acid?

Answer 15

When it accepts a proton