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Define acid error in potentiometric measurement
Accepted Answer
Acid error is the error that occurs in the potentiometric measurement of pH due to the acidic nature of the glass electrode used. The glass electrode develops a potential that is proportional to the hydrogen ion concentration of the solution. However, the glass electrode is also slightly acidic and releases hydrogen ions into the solution, which can interfere with the measurement. The acid error is typically small, but it can be significant in solutions with very low hydrogen ion concentrations.
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