(a) Give two reasons why fused alumina is mixed with cryolite in the electrolytic extraction of aluminium. (b) Write an equation for the reaction of sodium ...

State the atoms represented as shown below: (a) State the relationship between the two atoms. (b) What is the difference between them? (c) Give two examples ...

Methane is obtained when a powdered mixture of anhydrous sodium ethanoate and soda-lime is heated in a hard glass test tube. (a) Write an equation for the re...

(a) Name the industrial process by which ethene is obtained from petroleum fractions (b) Give the I. U. P.A.C name of the isomer whose structure is shown bel...

A colourless and odourless gas X burns in oxygen with a pale blue flame. (a) Suggest two gases which X could be. (b) Give one chemical test that could be use...

(a)State three characteristics of a catalyst. (b) Mention one manufacturing process in which each of the following metals is used as a catalyst: (i) iron; (i...

Sketch a curve to show how the solubility of a gas varies with increasing temperature

(a) Give the products of electrolysis of dilute copper (II) tetraoxosulphate(VI) solution using the following materials as electrodes: (i) carbon rod; (ii) c...

Give one oxide in each case which; (a) can act as a reducing agent (b) can be used as a refrigerant (c) is the anhydride of a strong acid; (d) is yellow when...