PracticeExam1bsoln - First hour practice exam...

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Unformatted text preview: First hour practice exam "b" solution key: 1c, 2b, 3a, 4a, 5e, 6a, 7b, 8d, 9e, 10d, 11e, 12a, 13b, 14b, 15b, 16c, 17d, 18c, 19e, 20e, 21c 22) Word problem The molecule CO (carbon monoxide) is formed in the partial oxidation of gasoline in car engines, and further oxidizes to CO2. It is odorless, colorless, and extremely toxic because it binds irreversibly to hemoglobin in the blood, leading to asphyxiation. C O * * b c) c') b +0.5 +0.5 +0.5 +0.5 z-axis a) fill the MO diagram in the box with the correct number of electrons for CO b) Label all the orbitals in the box in part a as "b", "nb" or "*" for bonding, nonbonding, and antibonding character. +2 nb nb +3 or * +0.5 b +0.5 +4c) sketch one of the "c)" and one of the "c')" molecular orbitals in the box below with correct signs: +2 +2 c) C c') O C O Note: correctly polarized pairs of atomic orbitals are also acceptable +2d) What will happen to liquid CO when it is poured between the poles of a magnet? It will not stick (diamagnetic) +2e) What is the bond order of CO? 3 +2 +1 Structure/charge: tructure for CO, and mark +3f) Draw aOreasonable Lewis dot spartial charge/direction the C and "+" or "-" to indicate of the dipole moment for your structure. Does your structure satisfy the octet rule? :C!O: "- "+ Octet rule? yes ...
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This note was uploaded on 10/10/2011 for the course CHEMISTRY 202 taught by Professor Grubele during the Spring '11 term at University of Illinois, Urbana Champaign.

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