e2ps10 - 1. What is the pH of a 1 L solution made with 3.26...

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

View Full Document Right Arrow Icon
sodium trichloroacetate? The K b of sodium trichloroacetate is 10 -12 . Molecular weights of tichloroacetic acid and sodium trichloroacetate are 163 g/mol and 185 g/mol respectively. a. 4 b. 3.5 c. 3 d. 2 2. 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 3. Consider the following table of acids and their pK a values. Rank these acids in order of increasing strength of their conjugate bases. Acid pK a CHOOH 3.77 CH 3 COOH 4.75 HF 3.20 a. HF < CH3COOH < CHOOH b. CHOOH < CH3COOH < HF c. CH3COOH < CHOOH < HF d. HF < CHOOH < CH3COOH 4. What volume of 1 M calcium hydroxide could be added to 500 mL of a buffer that is 0.4 M ammonia and 0.6 M ammonium chloride before exhausting the buffer? a. 600 mL b. 300 mL c. 150 mL d. 400 mL e. 200 mL 5. 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
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/25/2011 for the course CHEM 301H taught by Professor Laude during the Spring '11 term at University of Texas at Austin.

Page1 / 5

e2ps10 - 1. What is the pH of a 1 L solution made with 3.26...

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