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Weak Base Strong Acid Titrations

Q. Calculate the pH at the equivalence point when 100 mL of 0.20 M NH3 is titrated with a 0.40 M HCl solution.

Solved • Apr 27, 2020

Weak Base Strong Acid Titrations

Q. A 100.0 mL sample of 0.20 M NH3 is titrated with 0.10 M HNO3. The Kb of NH3 is 1.8 × 10-5. Which of the following is correct. Group of answer choices A) It will reach half-equivalence point after adding 50 mL of HNO3, and the pH value is 4.75. B) It will reach half-equivalence point after adding 50 mL of HNO3, and the pH value is 9.25. C) It will reach half-equivalence point after adding 100 mL of HNO3, and the pH value is 4.75. D) It will reach half-equivalence point after adding 100 mL oof HNO3, and the pH value is 9.25. E) None of the above is correct.

Solved • Apr 16, 2020

Weak Base Strong Acid Titrations

Q. A sample of KIO3 primary standard solid weighing 0.1092 grams was added to an HCl solution containing excess KI. The liberated I2 required 39.24 mL of a sodium thiosulfate (Na2S2O3) solution to reach the endpoint in a titration. Calculate the molarity of the standardized Na2S2O3 solution. (Molecular weight of KIO3 = 214 g/mol) KIO3 + 6 HCl + 6 Na2S2O3 → 3 Na2S4O6 + KI + 3 H2O + 6 NaCl

Solved • Apr 16, 2020

Weak Base Strong Acid Titrations

Q. Workbook question, that I need some help with. Getting ahead due to the quarantine. Chart needs to be filled out after the top.

Solved • Apr 14, 2020

Weak Base Strong Acid Titrations

Q. 563.7 mL of a 0.21 M solution of ammonia is mixed with 563.7 mL of a 0.21 M solution of HBr. What is the pH of the resulting solution of NH4Br? (Kb for NH3 equals 1.8 × 10-5)

Solved • Apr 2, 2020

Weak Base Strong Acid Titrations

Q. Determine the pH at the equivalence (stoichiometric) point in the titration of 29 mL of 0.27 M (CH3)3N(aq) with 0.16 M HCl(aq). The Kb of (CH3)3N is 6.5 x 10-5. Selected Answer: Incorrect 6.41 Correct Answer: Correct 5.41 ± 0.02

Solved • Mar 30, 2020

Weak Base Strong Acid Titrations

Q. A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 50.0 mL of HNO3. The kb of NH3 is 1.8*10^-5

Solved • Mar 23, 2020