Final answer:
You can titrate an unknown concentration of NaOH with KHP to determine its concentration; this is a common laboratory procedure used in chemistry to find the molarity of a solution.
Step-by-step explanation:
You can titrate an unknown concentration of NaOH with KHP (potassium hydrogen phthalate) to determine the true concentration of the NaOH. This statement is true. In a laboratory setting, the process of titration is commonly used to determine the concentration of an unknown solution. When you use a standard substance like KHP, which has a known and stable concentration, it reacts with the NaOH in a predictable stoichiometric fashion. By measuring the amount of KHP needed to react completely with the NaOH, the concentration of the NaOH can be calculated.
For example, the reaction between KHP and NaOH is as follows: KHC8H4O4(aq) + NaOH(aq) → NaKC8H4O4(aq) + H2O(l). The molar mass of KHC8H4O4 is used to find the moles of KHP, and this value is then used in stoichiometry to find the concentration of NaOH because the reaction occurs in a 1:1 mole ratio.