(i) Explain why is hydrochloric acid a strong acid and acetic acid, a weak acid ? How can it be verfied ?
(ii) Explain why equeous solution of an acid conducts electricity.
(iii) You have four solutions A, B,C and D. The pH of solution A is 6, B is 9, C is 12 and D is 7.
(a) Identify rhe most acidic and most basic solutions.
(b) Arrange the above four solutions in the increasing order of `H^(+)` ion concentration.
(c ) State the change in colour of pH paper on dipping in solution C and d.