What is the alkaline error in pH measurement

In strongly alkaline solutions measurement errors can appear due to a contribution to the potential from alkali ions – Lithium (Li+) and Sodium (Na+) ions in addition to that of the hydrogen ions. Na+ and Li+ ions interact with the glass membrane and can...

What is the exact meaning of the term pH ?

pH as a term was coined by Sorensen in 1909. He described the concentration of hydrogen ion as a logarithmic scale which he called “Pondus Hydrogeni” or the exponent of hydrogen. pH is a quantitative unit of measure which describes the degree of acidity or alkalinity...

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