In standardizing a solution of NaOH against 1.431 g of KHP (KHC8H4O4), the analyst uses 35.5 mL of the alkali and has to run back with 5.12 mL of HCl ( 1 mL = 0.0031 g Na2O). What is the concentration of the NaOH solution?

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.