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Homework 05 - Gadhia Tejas – Homework 5 – Due 11:00 pm...

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Unformatted text preview: Gadhia, Tejas – Homework 5 – Due: Oct 10 2007, 11:00 pm – Inst: James Holcombe 1 This print-out should have 28 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points Acetic acid (CH 3 COOH) is generally classi- fied as 1. amphoteric because it creates both pro- tons and hydroxyl ions in solution. 2. a strong acid because it has four hydro- gens. 3. a weak base because it has one hydroxyl group. 4. a strong acid because if fully ionizes in solution. 5. a weak base because it only partially ion- izes in solution. 6. a weak acid because it only partially ion- izes in solution. 7. a weak acid because it has three hydro- gens and a hydroxyl group. 002 (part 1 of 1) 10 points The strength of an acid or base is a measure of 1. how many hydroxide or hydrogen ions it contains. 2. the strength of its attraction to water molecules. 3. how vigorously it reacts with the other molecules. 4. how completely it dissociates in aqueous solution. 003 (part 1 of 1) 10 points In the reversible reaction H 3 O + + NH 3 * ) H 2 O + NH + 4 , what two substances act as acids in the Bronsted-Lowry sense? 1. H 3 O + and H 2 O 2. H 3 O + and NH + 4 3. NH 3 and H 2 O 4. NH 3 and NH + 4 5. some other pair 004 (part 1 of 1) 10 points The pH of a 1 × 10- 8 M solution of HNO 3 is 1. 8 2. 6 3. 6.96 4. 7 005 (part 1 of 1) 10 points In the series HClO, HClO 2 , HClO 3 , HClO 4 , which is the strongest acid? 1. HClO 2 2. HClO 4 3. HClO 4. HClO 3 006 (part 1 of 1) 10 points The pH of a human blood sample was mea- sured to be 7.41. What is the [OH- ] in this blood? 1. 4 . 12 × 10- 7 mol/L 2. 2 . 57 × 10- 7 mol/L 3. 3 . 89 × 10- 8 mol/L Gadhia, Tejas – Homework 5 – Due: Oct 10 2007, 11:00 pm – Inst: James Holcombe 2 4. 6 . 05 × 10- 7 mol/L 5. Cannot be determined from the informa- tion given....
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Homework 05 - Gadhia Tejas – Homework 5 – Due 11:00 pm...

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