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An uncalibrated pH electrode produces a voltage of 0.184 V for a solution of pH 5.89...

An uncalibrated pH electrode produces a voltage of 0.184 V for a solution of pH 5.89 at 25 degrees Celcius. If the same electrode is used under the same conditions to measure a solution of unknown pH and 0.376 V is measured, what is the pH of the second solution?
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Answer #1

The pH of the unknown solution is calculated, assuming a linear behavior:

pH = 5.89 * (0.376 V / 0.184 V) = 12.04

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