acid-base

Question 1

bronsted-lowry acid

Answer 1

an acid is a proton donor

Question 2

bronsted-lowry base

Answer 2

a base is a proton acceptor

Question 3

weak acid

Answer 3

A weak acid is one which undergoes partial dissociation in aqueous solution to produce H +(aq).

Question 4

strong acid

Answer 4

a strong acid is one which undergoes complete dissociation in aqueous solution to produce H+ (aq)

Question 5

Weak base

Answer 5

A weak base is one which undergoes partial ionisation in aqueous solution to produce OH–(aq)

Question 6

buffer questions answer

Answer 6

1) When a small amount of OH–/H+ ions is added to the solution, the following reaction occurs:
CH3COOH(aq) + OH–(aq)  CH3COO–(aq) + H2O(l)

2) The presence of a large reservoir of ___ molecules in the solution ensures that nearly all the added OH– ions are removed.

3) Hence [OH–] in the solution changes very little and the pH is kept approximately constant.

Question 6

strong base

Answer 6

A strong base is one which undergoes complete dissociation in aqueous solution to produce OH–(aq)

Question 7

buffer solution

Answer 7

a solution which is able to resist pH changes from the addition of small amounts of acid or base

Question 8

Suitable indicator

Answer 8

A suitable indicator is one where its pH range coincides with the region of rapid pH change in the titration curve