# Problem: Potassium hydrogen phthalate (KHP) is often used as a primary standard in acid-base titrations. If 19.15 mL of NaOH is required to neutralize 0.442 g of KHP, what is the concentration of NaOH?

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###### FREE Expert Solution

During titration, the acid and base reacts. In the given, NaOH is the base while KHP is the acid. Since KHP is an acid, it will donate a proton (H+) (based on the Bronsted-Lowry definition).

KHP and NaOH will break up into their ions in the solution and will react as shown:

Balanced Reaction:  KHP + NaOH  NaKP + H2O

Given:

V NaOH = 19.15 mL

Mass KHP = 0.442 g

[NaOH] = ?

Calculate for the concentration of NaOH using the following steps:

79% (90 ratings)
###### Problem Details

Potassium hydrogen phthalate (KHP) is often used as a primary standard in acid-base titrations. If 19.15 mL of NaOH is required to neutralize 0.442 g of KHP, what is the concentration of NaOH?

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