The PH of a 0

question 138

Multiple Choice

The pH of a 0.14 M solution of an unknown monoprotic acid is 5.85. Calculate the K_a of the acid.

• A) 1.4 x 10^-6
• B) 1.4 x 10^-11
• C) 1.0 x 10^-5
• D) 7.1 x 10^-9
• E) 2.0 x 10^-7

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