An unknown weak monoprotic acid (20.0 g) with a mass concentration of 1.98 g/L was titrated with a standardized 1.00 M NaOH titrant. The weak acid had a pH of 3.28 and required 0.58 mL of NaOH titrant to reach neutralization. What is the concentration of HA before titration?  What is the concentration of H+ before titration?  What is the concentration of A-  before titration?  What is the Ka of the weak acid?  Find the pKa of the weak acid.

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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.