Lecture 1

Question 1

True or false
Members of a conjugate pair differ from each other by the presence or absence of the transferable hydrogen ion.

Answer 1

True

Question 2

Identify the conjugate pair in the following equation:
__>
CH3COOH + H2O < —- H3O+ + CH3COO–

Answer 2

CH3COOH → Acid
CH3COO– → Conjugate Base

Question 3

A substance which can act as either an acid or a base

Answer 3

Amphoteric substance

Question 4

A potential proton donator formed when a base accepts a proton

Answer 4

Conjugate acid of a base

Question 5

Only partially ionises when dissolved in water

Answer 5

Weak acid

Question 6

It dissociates completely (100%) in aqueous solution

Answer 6

Strong acid

Question 7

A molecule that donates a proton when it encounters a base

Answer 7

Bronsted Lowry acid

Question 8

Identify the conjugate pair in the following equation:

NH4+ + H2O NH3 + H3O+

Answer 8

NH4+ → Conjugate Acid,

NH3 → Base

Question 9

What substance can be classified as an Arrhenius acid?

Answer 9

HCL

Question 10

True or false
Water is an amphoteric solution, i.e. it can act as either an acid or a base?

Answer 10

True

Question 11

Is a concentrated acid is a strong acid?

Answer 11

no

Question 12

What can an acid do (proton wise)

Answer 12

Donate a proton