Post-lab 9 Bleach Analysis-problems-1

Post-lab 9 Bleach Analysis-problems-1 - wetsel(zpw67 –...

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Unformatted text preview: wetsel (zpw67) – Post-lab 9 Bleach Analysis – lyon – (51900) 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points In the reaction Cl 2 (g) + S 2 O 2- 3 (aq) → Cl- (aq) + SO 2- 4 (aq) of the thiosulfate ion with chlorine gas in an acidic solution, identify the reducing agent. 1. Cl 2 2. S 2 O 2- 3 3. Cl- 4. SO 2- 4 002 (part 2 of 2) 10.0 points Balance the equation using oxidation and re- duction half-reactions. What is the small- est possible integer coefficient of SO 2- 4 in the combined balanced equation? 003 10.0 points For the forward redox reaction Cl 2 (g) + 2 NaOH(aq) → NaCl(aq) + NaOCl(aq) + H 2 O( ℓ ) to prepare bleach, identify the substance re- duced by the change in oxidation numbers. 1. NaOCl( ℓ ) 2. NaOH(aq) 3. Cl 2 (g) 4. None of these 5. NaCl(aq) 004 10.0 points Write and balance the equation for the re- action between nitric acid and potassium io-...
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This note was uploaded on 07/18/2011 for the course CH 204 taught by Professor Leytner during the Spring '08 term at University of Texas.

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Post-lab 9 Bleach Analysis-problems-1 - wetsel(zpw67 –...

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