Problem_Set_1_Solutions - Chem 242a Name Gil Grissom...

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Chem 242a Homework I Due Sept 8 th in Class Name Gil Grissom 1 1. Methyl isocyanate is a very reactive molecule used in the production of pesticides and was involved in one of the worst industrial accidents in Bhopal, India. In 1984, introduction of water into a tank of methyl isocyanate started an exothermic reaction that vaporized the liquid methyl isocyanate. Approximately 200,000 people were exposed. While the numbers are disputed, between 1,000– 8,000 died directly from this release and the long-term health effects are only now being realized. Please provide a drawing of methyl isocyanate (CH 3 –N=C=O) containing the following four items: (a) An orbital representation of the molecule (b) Identify each orbital type (c) Show formal charges on carbon, nitrogen, and oxygen (d) Indicate each bond angle in a table An example drawing is provided for methane: If you proposed sp hybridization on N, that would also be acceptable.
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Chem 242a Homework I Due Sept 8 th in Class Name Gil Grissom 2 2. Indicate all non-zero formal charges on non-hydrogen atoms in the compounds below. Note that not all lone pairs of electrons have been shown: Always draw out Lewis Dot structures when in doubt Answers:
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Chem 242a Homework I Due Sept 8 th in Class Name Gil Grissom 3 3. Which of the following pairs of Lewis structures do not constitute resonance structures? In (a), (c), and (e) the connectivity of atoms has changed, which is not allowed for resonance structures. In (d) a lone pair was added to the structure on the right that violates the Lewis octet on Nitrogen and the charge on Carbon is incorrect.
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Chem 242a Homework I Due Sept 8 th in Class Name Gil Grissom
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This note was uploaded on 02/15/2009 for the course CHEM 241A taught by Professor Olenyuk during the Spring '07 term at University of Arizona- Tucson.

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Problem_Set_1_Solutions - Chem 242a Name Gil Grissom...

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