Question

A liquid has a pH less than 7 which represent an acidic solution : 

(i) State the nature of solution if its pH increases from 7 to 14. 

(ii) Mention the ion whose concentration increases with the increase in pH value. 

(iii) Suggest a method that is generally used for measuring the pH value.

Answer 1

(i) Increase in the strength of alkali. So the nature of solution will be basic.

(ii) Hydroxide ion or hydroxyl ion or OH^- ion.

(iii) A paper impregnated with the universal indicator is generally used to measure the pH of a solution.