Question

Enter your answer in the provided box. Find the pH of a buffer that consists of 0.34 M HBrO and 0.89 M KBrO (PK, of HBrO = 8.64). pH =

Answer 1

Answer : The pH of buffer is 9.06.

Explanation : Given,

`pK_a=8.64`

Concentration of HBrO = 0.34 M

Concentration of KBrO = 0.89 M

Now we have to calculate the pH of buffer.

Using Henderson Hesselbach equation :

`pH=pK_a+\log ([Salt])/([Acid])`

`pH=pK_a+\log ([KBrO])/([HBrO])`

Now put all the given values in this expression, we get:

`pH=8.64+\log ((0.89)/(0.34))`

`pH=9.06`

Therefore, the pH of buffer is 9.06.