1.50 g of a weak acid (molar mass 176) is dissolved in 50.0 mL of water, and the resultant solution is titrated with 0.300 M NaOH. When 12.5 mL of 0.300 M NaOH is added, the pH of the resultant solution is 4.00. Calculate Ka for this 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.