1.

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 72. pH value for basic solution lies between-(i) 7 to 14(ii) 0 to 74. pH value for neutral solution is-(i) 6 (ii) 7(iii) 8(iv) None of these4. 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) FALSE5. 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

Answer»

1. (ii) 2 to 7

2. (i) 7 to 14

3. (ii) 6

4. (i) TRUE

5. (ii) FALSE



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