(a) Consider the following compounds: MnO\(_2\), NaHCO\(_3\), Na\(_2\)CO\(_3\), NH\(_4\)CI cnd Pb(NO\(_3\))\(_2\) Select the compound(s) which;

(i) has a black colour

(ii) is a basic oxide:

(ii) sublime on heating

(iv) dissolves in water to give a solution of pH less than 7.

 

(b) State the colour of each af the following aqueous Solutions:

(i) Calcium hydroxide;

(ii) iron (III) trioxonitrate (V):

(ii) Copper (II) tetraoxosulphate (VI);

(iv) Poassium heptaoxodichromate (VI).

 

(c) Give one example of a neutral oxide which is a colourless liquid at room temperature.

(d) Draw and label a diagram for a set-up that can be used for the separation of two immiscible liquids