Question

The pH values of four solutions A B C D are 5 12 8 and 9 respectively. The correct decreasing order of their hydroxyl ion concentration is

       a)A > B >C >D

b)D >C >B >A  

      c) A >C >D > B  

      d ) B > D >C >A

​

Answer 1

Increasing order of Their Hydroxyl ion is 5<8<9<12

Strong acidic property will shown by 5 >8>9>12

Explanation:pH starts from 0 to 14

Acidic to Basic

At 7 it is neutral

If our mouth contains acid than it will break the upper layer of our teeth

We can dec acidity By using basic compounds..