(a) Give one reason why a collision between reactants may not produce new species.
(b) Explain, illustrating with appropriate equation(s), why an aqueous solution of aluminium chloride is acidic.
Explanation
a) A collision between reactants may not produce new species because the reactants may the activation energy.
(b) AlCl(_{3(g)}) + H(_2)O(_{(l)}) (to) Al(OH)(_{3(aq)}) + HCl(_{(aq)}) of the two products of aluminium chloride HCl is a strong acid which will make the medium acidic.