What is the pH at the equivalence point when of () is titrated with ?
Answer and explanation
Correct answer: C.
- Step 1: Equivalence point: equal moles of weak acid and strong base form sodium acetate.
- Step 2: Volume doubles (), so salt concentration is .
- Step 3: Acetate hydrolyzes: , with .
- Step 4: .
- Step 5: .
Answer
8.72.
Why not the others: '' is for strong acid-strong base titration; '' is the ; '' uses undiluted concentration.
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