Give two examples of each of the following :

(a) oxy-acid

(b) hydracid

(c) tribasic acid

(d) dibasic acid

Name the :

(a) acidic anhydride of the following acids:

1. sulphurous acid
2. nitric acid
3. phosphoric acid
4. carbonic acid

(b) acid present in vinegar, grapes and lemons.

Give a balanced equation for :

(i) reaction of nitrogen dioxide with water

(ii) preparation of a non volatile acid from a volatile acid.

What do you understand by the strength of an acid? On which factor does the strength of an acid depend.