Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Chemical Sciences Common Named Reactions Acidic and Basic Strength
The acid-base indicator (HIn) shows a colour change at pH 6.40 when 20% of it is ionized. Thedissociation constant of the indicator is
1
9.95×10-8
2
3.95×10-6
3
4.5×10-8
4
6×10-8
5
Question Not Attempted