Chemistry · Ionic equilibrium: Weak and strong electrolytes, ionization of electrolytes
The pH of solution containing sodium acetate and acetic acid is: \)
The pH of solution containing \( 0.10 M \) sodium acetate and \( 0.03 M \) acetic acid is: \( \left(p K_{a} \text { for } C H_{3} C O O H=4.57\right) \)
- A. 4.09
- B. 6.09
- C. 5.09
- D. 7.09
Step-by-step solution
Using Henderson-Hasselbalch equation: pH = pKa + log([acetate]/[acetic acid]) = 4.57 + log(0.10/0.03) = 4.57 + log(3.333) ≈ 4.57 + 0.5229 = 5.09.
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