W10_titrations_salts_key

W10_titrations_salts_key - Chem 125 Dr. Retsek Winter 2008...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chem 125 Dr. Retsek Winter 2008 Worksheet 10: Titrations and Salts (KEY) 1. A 25.00-mL sample of 0.100 M HCl is titrated with with 0.100 M NaOH. a. What is the pH before the addition of any NaOH? pH = 1.00 b. How much NaOH is required to reach the equivalence point? 25.00 mL c. What is the pH at the equivalence point? 7.00 2. A 25.00-mL sample of 0.100 M HC 2 H 3 O 2 is titrated with 0.100 M NaOH. a. What volume of base is needed to reach the equivalence point? 25.00 mL b. At what volume, does the pH = pK a 12.5 mL c. Given K a for HC 2 H 3 O 2 is 1.8 x 10-5 , calculate the pH before the addition of any NaOH 2.89 d. Estimate the pH at the equivalence point. pH > 7 3. For the titration of 25.00 mL of 0.150 M HCl with 0.250 M NaOH: a. Calculate the initial pH. 0.824 b. Is the solution neutral, acidic, or basic at the equivalence point? neutral c. How much NaOH is required to reach the equivalence point? 15.00 mL d. Estimate the pH of the solution after the addition of 25.00 mL of NaOH. 11-12...
View Full Document

Page1 / 2

W10_titrations_salts_key - Chem 125 Dr. Retsek Winter 2008...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online