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15-04-2024
Chemistry

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A solution of 0.055 M propanoic acid, HC₃H₅O₂, has a pH of 3.06. What is the Ka for propanoic acid? Express your answer to three significant figures.
a) 2.23 x 10⁻⁴
b) 1.84 x 10⁻⁴
c) 1.60 x 10⁻⁴
d) 3.26 x 10⁻⁴

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