e2ps11 - CH302 Practice Exam 2 1. If 500 ml of each of the...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CH302 Practice Exam 2 1. If 500 ml of each of the following solutions is combined, which will not produce a buffer? a. .1 M trichloroacetic acid + .1 M sodium trichloroacetate b. .3 M trichloroacetic acid + .15 M barium hydroxide c. .3 M trichloroacetic acid + .2 M sodium hydroxide d. .2 M sodium trichloroacetate + .18 M hydrochloric acid 2. Consider the following table of acids and their pKa values. Rank these acids in order of increasing strength of their conjugate bases. Acid pKa CHOOH 3.77 CH 3 COOH 4.75 HF 3.20 a. HF < CH 3 COOH < CHOOH b. CHOOH < CH 3 COOH < HF c. CH 3 COOH < CHOOH < HF d. HF < CHOOH < CH 3 COOH 3. What is the pH of a 100 mL of a buffer solution containing .25 M formic acid and .30 M sodium formate if you add .01 mols of Ba(OH) 2 ? The pKa of formic acid is 4. a. 3.7 b. 4 c. 4.4 d. 5 4. Consider the following titration curve of an acid, H 2 A: At the point indicated by the arrow, which species is predominant?
Background image of page 1

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

View Full DocumentRight Arrow Icon
a. H 2 A b. HA - c. A 2- d. No species is predominant, [H 2 A] = [HA - ] 5. If 25 mL of a .17 M solution of barium hydroxide is titrated with 75 mL of a .1 M nitric acid
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/17/2011 for the course CH 302 taught by Professor Holcombe during the Spring '07 term at University of Texas.

Page1 / 5

e2ps11 - CH302 Practice Exam 2 1. If 500 ml of each of the...

This preview shows document pages 1 - 3. Sign up to view the full document.

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