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21-12-2022
Chemistry

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A 0.10 M solution of a weak monoprotic acid has a pH equal to 4.0. The ionization constant ka of the acid is
A. 1 x 10^-3
B. 1 x 10^-4
C. 1 x 10^-7
D. 1 x 10^-8
E. 1 x 10^-9

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