A weak acid is titrated with NaOH; pH at half-equivalence = 4.7.
What is Ka for the weak acid?
- A
4.7
- B
Cannot be determined
- C
5.0e-10
- Dcheck_circle
2.0e-5
Explanation
pKa = pH at half-equivalence = 4.7. Ka = 10^-4.7 ~ 2.0e-5.
Acid-Base Titrations
AP Chemistry· difficulty 3/5
Want 10 more like this — adaptive to your weak spots?