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KCET2020ChemistryGeneral Organic Chemistry

Which of the following is the strongest base?

Options

  1. ACH ₃ COO ⁻
  2. BCl ⁻
  3. COH ⁻
  4. DCH ₃ O ⁻

Correct answer

D. CH ₃ O ⁻

Step-by-step solution

We know, an anion is strongest base, if its conjugate acid is weakest. Here, CH ₃ COO ⁻ will have conjugate acid CH ₃ COOH . Cl ⁻ will have conjugate acid HCl. OH ⁻ will have conjugate acid HOH. CH ₃ O ⁻ will have conjugate acid CH ₃ OH . Since, out of above four, CH ₃ OH will be the weakest acid and hence, CH ₃ O ⁻ will be strongest base.

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