Chapter 16, Problem 100E

Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has the formula ${\text{KHC}}_{\text{8}}{\text{H}}_{\text{4}}{\text{O}}_{\text{4}}$. This is often written in the short-hand notation as KHP. If $25.0\text{ mL}$ of a potassium hydroxide solution are needed to neutralize $2.26\text{ g}$ of KHP, what is the molarity of the potassium hydroxide solution?

Potassium hydrogen phthalate (sometimes called potassium biphthalate, as shown on this bottle) is an acid that is convenient to store and use because it is a solid.