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56 solutions

Weak Base Strong Acid Titrations

Q. When 25 mL of 0.12 M aqueous ammonia is titrated with 0.12 M hydrobromic acid, what is the pH at the equivalence point? For ammonia, NH3, Kb = 1.8 x 10-5. Equivalence point pH = ------------?

Solved • Nov 14, 2019

Weak Base Strong Acid Titrations

Q. Consider a buffer solution that is 0.50 M in NH3 and 0.20 M in NH4Cl. For ammonia, pKb = 4.75. Calculate the pH of 1.0 L of the solution upon addition of 30.0 mL of 1.0 M HCl to the original buffer solution. Express your answer to two decimal places.

Solved • Nov 8, 2019

Weak Base Strong Acid Titrations

Q. Consider the titration of 50.0 mL of 0.20 M NH3 (Kb = 1.8x10^-5) with 0.20 M HNO3. Calculate the pH after addition of 50.0 mL of the titrant at 25 degrees C. Express the pH numerically.

Solved • Nov 8, 2019

Weak Base Strong Acid Titrations

Q. Sketch the titration curve and calculate the pH of the equivalence point for the titration of 30mL of 0.20M CH3NH2 with 0.10M HBr.

Solved • Nov 5, 2019

Weak Base Strong Acid Titrations

Q. Calculate the pH of a solution made by mixing 100.0 mL of 0.644 M NH3 with 100.0 mL of 0.100 M HCl. (Kb for NH3 = 1.8 x 10^-5). a. 9.99 b. 4.01 c. 8.52 d. 9.26 e. none of these

Solved • Nov 4, 2019

Weak Base Strong Acid Titrations

Q. How many moles of HCl need to be added to 15.0 mL of 0.50 M NaZ to have a solution with a pH of 6.50? (Ka of HZ is 2.3x10^-5) Assume the negligible volume of the HCl

Solved • Nov 4, 2019

Weak Base Strong Acid Titrations

Q. Consider the titration of 100.0 mL of 0.250 M aniline (Kb = 3.82 x 10^-10) with 0.500 M HCl. calculate the pH of the solution at the stoichiometric point. I need help understand the steps to solving this problem based on acid base equilibria

Solved • Nov 4, 2019