Identify the conjugate base in the equation below CH3COOH + H2O - H30* + CH3COO-
O a. CH3COO
O b. H20
O c. H30+
O d. CH3COOH

a. CH3COO⁻.

Explanation:

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In this case, according to the given ionization reaction of acetic acid:

CH₃COOH + H₂O --> H₃O⁺ + CH₃COO⁻

Whereas we can evidence how the CH₃COOH is the acid whereas H₂O the base, as the former donates H ions to the latter, which accepts them; we can infer that H₃O⁺ is the conjugate acid, resulting from the base and the a. CH3COO⁻ is the conjugate base, resulting from the acid.

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