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Calculate the molarity of NaOH solution if 12.25 mL was used to titrate 0.2615 gram of primary standard KHP (potassium hydrogen phthalate, C8H5KO4).
Solution:
The given problem is about finding the concentration of NaOH solution. KHP is an acid mostly used for standardization of any basic solution that are usually prepared in the lab. Although we know how to prepare any solutions in the lab, it is better to do the standardization so that we can check if the concentration is correct or not.
If NaOH solution is used to titrate KHP sample, then the chemical reaction for neutralization is
Therefore, the concentration of NaOH solution used to titrate a sample of KHP is
