Question
Chemistry Question on Buffer Solutions
The dissociation constant of bromocresol purple indicator is 3.981 × 10-7 at 0° C. The indicator when added to a buffer solution gave a colour matched with 50% basic colour and rest matched with acidic colour. The pH of buffer is:
[log 3.98 = 0.5999]
A
7.40
B
3.25
C
6.40
D
5.40
Answer
6.40
Explanation
Solution
The correct option is(C):6.40.