A scale for measuring hydrogen ion concentration in a solution, called pH scale has been developed. The p in pH stands for 'potenz' in German, meaning power. On the pH scale we can measure pH generally from 0 (very acidic) to 14 (very alkaline). pH should be thought of simply as a number which indicates the acidic or basic nature of a solution. Higher the hydronium ion concentration, lower is the pH value.
1. pH value for acidic solution lies between-
(i) 7 to 14
(ii) 0 to 7
2. pH value for basic solution lies between-
(i) 7 to 14
(ii) 0 to 7
4. pH value for neutral solution is-
(i) 6
(ii) 7
(iii) 8
(iv) None of these
4. True or false. The pH value increases from 7 to 14, it represents an increase in \(OH^-\) ion concentration in the solution.
(i) TRUE
(ii) FALSE
5. True or false. The pH value increases from 0 to 7, it represents an increase in \(OH^-\) ion concentration in the solution.
(i) TRUE
(ii) FALSE
