4. Acetic acid has a pKa of 4.76, but at pH5.76 what is the ratio of the conjugated acid (CH3COOH) to the conjugated base 613086d0b6a76.jpg?
(A) 1:100
(B) 100:1
(C) 1:10
(D) 10:1

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統計： A(0), B(0), C(1), D(1), E(0) #2769386