A 25.0 mL sample of a 0.1500 M  solution of aqueous trimethylamine is titrated with a 0.1875 M  solution of HCl. Calculate the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added; pKb of (CH3)3N = 4.19 at 25°C.

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A: Concentration of weak acid, c = 0.05 M Percentage ionisation = 0.2% x = 0.002    

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A: The solution is given below - 

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.