M = Acids and alkalis

Question 1

Define an acid and an alkali

Answer 1

ACID = A proton or hydrogen donor

ALKALI = A proton or hydrogen accepter

Question 2

Difference between an alkali and a base?

Answer 2

Alkali is a base that is soluble in water

Question 3

Example of:

1 - Strong acid
2 - Weak acid
3 - Strong alkali
4 - Weak alkali

Answer 3

1 - Stomach acid = HCl (pH 1)
2 - Ethanoic acid (CH3COOH)
3 - Bile (from the gall bladder)
4 - Ammonia, tooth paste

Question 4

Weak acid reactions are often what?

Give an example.

Answer 4

They’re reversible.

Ethanoic acid Ethanoate ion + Hydrogen ion
CH3COOH CH£COO- + H+