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Calculating molarity of a monoprotic acid

An aqueous solution of a monoprotic acid ("HA"; Ka = 3.82 x 10-1) has a pH of 3.93. What is the molarity of the solution? (i.e. [HA]+[A-].)

Solution Summary

This solution provides in 140 words how the solution can be broken down and how pH can be used to calculate concentration and finally the molarity of the solution. The answer is given in an attached .doc file.