The PH of a 0

question 3

Multiple Choice

The pH of a 0.095 M solution of an unknown monoprotic acid is 5.42. Calculate the K_a of the acid.

• A) 3.8 x 10^-6
• B) 3.6 x 10^-7
• C) 1.5 x 10^-10
• D) 2.6 x 10^-9
• E) 2.8 x 10^-8

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