Calculate the pH of a buffer solution?
回答 (1)
2020-05-08 10:39 pm
✔ 最佳答案
[CH₃COO⁻] = (0.1 mol) / (1 dm³) = 1 MHence, [CH₃COO⁻]/[CH₃COOH] = (1 M) / (1 M) = 1
Consider the dissociation of CH₃COOH:
CH₃COOH(aq) + H₂O(ℓ) ⇌ CH₃COO⁻(aq) + H₃O⁺(aq) Ka = 1.8 × 10⁻⁵
Henderson-Hasselbalch equation:
pH = pKa + log([CH₃COO⁻]/[CH₃COOH])
pH = -log(1.8 × 10⁻⁵) + log(1)
pH = 4.74
收錄日期: 2021-05-01 22:36:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200508142547AARSKx6