(a) List two industrial uses of concentrated tetraoxosulphate (VI) acid

(b) The diagram below represents the set-up for the electrolysis of dilute tetraoxosulphate (VI) acid. Use it to answer Questions (i) to (iii).

(i) Which letter on the diagram represents the battery?

(ii) Write an equation for the reaction occurring at the cathode

(iii) What product does V represent?

(a) State two properties of alkalis

(b)(i) Why is tetraoxosulphate (VI) acid able to produce two types of salt?

(ii) Write an equation for the reactior involved on heating sodium trioxosulphate (IV) with hydrochloric acid.

Consider the reaction represented by the following Q equation: N\(_2\)O\(_{4(g)}\) \(\rightleftharpoons\) 2NO\(_{2(g)}\)  \(\Delta\)H = +57.2KJmol\(^{-1}\)

(a) When is the reaction said to be at equilibrium?

(b) Mention two conditions that can favour the forward reaction

(c) Name the principle involved in (b) above.

(a) List two products obtained when crude oil is refined

(b)(i) What is the general formula for alkanols?

(ii) State the type of reaction involved in the conversion of ethanol to ethanoic acid

(iii) Write an equation to show how ethanoic acid reacts with sodium trioxocarbonate (IV).

(a) State Gay Lussac's law of combining volumes

(b) Hydrogen reacts with oxygen according to the following equation;

2H\(_{2(g)}\) + O\(_{2(g)}\) ---> 2H\(_2\)O\(_{(g)}\). If 50cm\(^3\) of hydrogen were sparked with 30cm\(^{3}\) of oxygen, calculate the volume of unused oxygen after cooling to the initial temperature and pressure.