Consider the titration of 100.0 mL of 0.250 M aniline (K_b = 3.8 × 10^-10) with 0.500 M HCl. Calculate the pH of the solution at the stoichiometric point. A) 8.70 B) 2.68 C) 11.62 D) -0.85 E) none of these

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Quizplus · Accepted Answer

At the stoichiometric point, aniline is converted to its conjugate acid, C6H5NH3+. The pH is determined by the hydrolysis of C6H5NH3+, which is acidic. Using the Kb of aniline, we can find the Ka of C6H5NH3+ and calculate the pH, which is approximately 2.68.

Consider the Titration of 100