Worksheet 11 Titration Ph Pk Log Base Acid Objective Analyze And Perform Calculations For Various Points Alo 1 (179.64 KiB) Viewed 8 times
Worksheet 11 Titration Ph Pk Log Base Acid Objective Analyze And Perform Calculations For Various Points Alo 2 (142.28 KiB) Viewed 8 times
Worksheet 11: Titration pH = pK₂ + log- [base] [acid] Objective: Analyze and perform calculations for various points along a titration curve. 1. Consider the titration of 40.00 mL of 0.30 M pyridine, C5H5N (Kb = 1.7 x 10-⁹) with 0.25 M nitric acid. For each question below, classify the problem you are solving as a strong acid (SA), strong base (SB), weak acid (WA), weak base (WB), or buffer/common ion problem (B). Then perform the requested calculation. You'll need more room than is provided below to solve these problems, so get out some scratch paper. a. We are titrating a strong / weak base with a strong / weak acid. (circle one) mL acid At the equivalence point, I expect the pH to be acidic / neutral / basic. (circle one) b. Calculate the volume of 0.25 M nitric acid needed to reach the equivalence. c. Calculate the pH of the pyridine solution before the addition of nitric acid. Problem type (what's present after any potential LR calc?): SA SB B mL acid added total mL pH = WA WB
d. Calculate the pH of the pyridine solution at the midpoint in the titration. Problem type (what's present after any potential LR calc?): SA SB WA WB B mL acid added total mL pH e. Calculate the pH of the pyridine solution at the equivalence. Problem type (what's present after any potential LR calc?): SA SB WA WB B mL acid added total mL pH = f. Calculate the pH of the pyridine solution after adding 30 mL nitric acid. Problem type (what's present after any potential LR calc?): SA SB WA WB B mL acid added total mL pH = = g. Calculate the pH of the pyridine solution after 55.0 mL of 0.25 M nitric acid has been added. Problem type (what's present after any potential LR calc?): SA SB WA WB mL acid added total mL pH = = B
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!