12.1.1 - The bronsted - Lowry theory

Question 1

Who and when proposed the theory that acids and bases react?

Answer 1

Johannes Bronsted and Thomas Lowry

1923

Question 2

What is the Bronsted - Lowry theory?

Answer 2

For a base to accept a proton, it must have a lone pair of electrons.
Bases must contain an element from the right hand side of the periodic table, usually oxygen

Question 3

How do we determine acids and bases in a reaction?

Answer 3

Acids donate protons
Bases accept protons

Question 4

What do conjugate bases do to become an acid?

Answer 4

Gain a proton

Question 5

Is HCl monoprotic or diprotic?

Answer 5

Monoprotic

Question 6

What does it mean when we say HCl is monobasic?

Answer 6

1 mol of the acid can neutralise one mole of OH- ions.

Question 7

Is sulfuric acid monoprotic or diprotic?

Answer 7

Diprotic

Question 8

What is an amophoteric substance and give an example?

Answer 8

A substance that can act as both an acid and a base

Water

Question 9

What do strong acids do in solution?

Answer 9

Completely dissociate

Question 10

What do weak acids do in solution?

Answer 10

They only partially dissociate.

Question 11

What can the equilibrium constant, Ka, be used for?

Answer 11

To work out the degree to which an acid dissociates