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The weak acid HA has a Ka of 1.34×10−5. If a 1.9 M solution of the...

The weak acid HA has a Ka of 1.34×10−5. If a 1.9 M solution of the acid is prepared, what is the pH of the solution?

Select the correct answer below:

pH=2.3

pH=4.7

pH=6.5

pH=7.1

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