Assignment__4_Key

Assignment_4_Key - 2 with the help of a catalytic converter(also include the net rreaction(3 pts Catalytic converters use CO as a reducing agent

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ETOX 102A Homework #4 Key 1). Hydroxyl radicals are among the most reactive and highly unstable of environmental oxidants. They may be generated by various reaction pathways, such as Fenton reaction or by sunlight. Draw an example of how a hydroxyl radical is generated by both a Fenton reaction and by sunlight. (3 pts) Fenton Reaction: Fe 2+ + H 2 O 2 Fe 3+ + - OH + . OH (1.5 pts) Hydrogen Abstraction : C 6 H 6 + . OH H 2 O + . C 6 H 5 + . OH C 6 H 5 –OH (1.5 pts) 2). Catalytic converters were installed in automobiles to reduce the amount of combustion gases released into the environment. Please draw a reaction diagram to explain how NO (nitric oxide) is converted into N
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Unformatted text preview: 2 with the help of a catalytic converter (also include the net rreaction). (3 pts) Catalytic converters use CO as a reducing agent along with Pt, Pd, and Rh as reducing catalysts. (1 pt) NO + CO N 2 O + CO 2 (0.5 pt) N 2 O + CO N 2 + CO 2 (0.5 pt) N et Reaction : NO + 2CO N 2 + 2CO 2 (1 pt) 3). Please diagram the general reaction mechanism of base-catalyzed hydrolysis. Would base-catalyzed hydrolysis be more likely to occur in freshwater or seawater? Why (please briefly explain)? (3 pts) (scheme is in lecture notes) More likely to occur in freshwater due to alkaline ph (more hydroxyl groups available)...
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This note was uploaded on 03/10/2011 for the course ETX 102A taught by Professor Ronaldtjeerdema during the Winter '10 term at UC Davis.

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