the reported molar concentration of the sodium hydroxide solution will be too high when is used for the standardization of the naoh solution.
The term "standardization" in scientific or analytical chemistry means the process of determining standards or concentrations of a particular substance.
One of the benefits of standardization, and the most important one, is that you get results with minimal error.
.A standard solution has an accurately known concentration and for this experiment sodium hydroxide was standardized with a primary standard acid, potassium hydrogen phthalate. A primary standard could be any pure chemical that can be used as the initiation of a quantitative analysis.
If the khp is only 90% pure, the real mass of the acid will be less than weighed doing less the real moles of potassium hydrogen phthalate. Thus, in titration, volume of NaOH will be less than real volume and reported molar concentration will be too high.
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