Question

Consider the titration of 84.0 mL of 0.144 M Ba(OH)2 by 0.576 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added. (a) 0.0 mL 13.8 Correct: Your answer is correct. (b) 17.0 mL 13.2 Correct: Your answer is correct. (c) 29.0 mL 0.669 Incorrect: Your answer is incorrect. (d) 42.0 mL 7.0 Correct: Your answer is correct. (e) 84.0 mL 0.54 Incorrect: Your answer is incorrect.

Answer 1

Determine the limiting reactant.

Calculate the moles of the excess reactant.

Calculate the moles of the resulting salt.

Determine the concentration of the resulting solution.

Use the concentration of OH- to find pOH and then pH.

Answer: The correct pH should be approximately 13.33