(a) An aqueous solution of salt Q was added to excess Sodium trioxocarbonate (V) solution in a test tube. There was effervescence, the test tube became warm and a white precipitate was observed. State three inferences that could be drawn from these observations.

(b) Consider the following salts: NH\(_4\)CI; PbSO\(_4\); NaHCO\(_3\), Cu(NO\(_3\))\(_2\) and ZnCO\(_3\). Select from the list, the salt(s) which;

(i) do not/does not readily dissolve in water;

(i) produce(s) effervescence with dilute mineral acids;

(ii) decompose(s) on heating

(iv) dissolves(s) in water to form an alkaline solution;

(v) sublime(s) on heating.