Question

What are the sources of the acid and alkaline errors in pH measurement with a glass electrode?

Short answer

The excessive concentration of sodium ions is a source of alkaline measuring mistakes.

The high concentration of hydrogen ions is the source of acid in pH measurements.

Step-by-step solution

Step:1 Concept Introduction.

The large concentrations of hydrogen ions and sodium ions, respectively, are the sources of acid and alkaline mistakes in pH measurements with a glass electrode.

Step:2 

The glass electrode measures the concentration of the fluid. The potential difference across the glass bulb is measured when a glass electrode is immersed in the fluid.

Because of the large concentration of hydrogen ions, acidic mistakes are common. The drop in values is due to the high concentration of these ions. As a result, the electrode is unable to accurately measure the value.

Sodium errors are sometimes known as alkali errors. These blunders can be seen at the most fundamental levels. The concentrations of hydrogen ions in these solutions are lower than the concentrations of sodium ions in the provided sample. As a result, an electrode will react to sodium ions and provide an erroneous value for the sample.