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Why does acetone [ (CH3)2C=D0, dipole moment = 2.69 D] have a larger dipo %3D moment than phosgene [CI2C=0, dipole moment = 1.17 D] ? Note: electronegativities C = 2.5, CI = 3.2, O = 3.5, H = 2.2

Why does acetone [ (CH3)2C=D0, dipole moment = 2.69 D] have a larger dipo %3D moment than phosgene [CI2C=0, dipole moment = 1.17 D] ? Note: electronegativities C = 2.5, CI = 3.2, O = 3.5, H = 2.2

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Question:** Why does acetone [(CH₃)₂C=O, dipole moment = 2.69 D] have a larger dipole moment than phosgene [Cl₂C=O, dipole moment = 1.17 D]? **Note:** Electronegativity values are C = 2.5, Cl = 3.2, O = 3.5, H = 2.2. **Options:** **A.** In phosgene, the resultant of the C-Cl bond dipole moments is opposite to and partially cancels the C=O dipole moment. In acetone, the resultant of the C-H bond dipole moments (although small) adds to the C=O dipole moment. **B.** Phosgene has a tetrahedral geometry while acetone possesses a trigonal geometry. **C.** The C-H bond dipole moments of acetone are greater in magnitude than C-Cl bond dipole moments of phosgene. **D.** In phosgene the C-Cl bond dipoles cancel out each other.
Transcribed Image Text:**Question:** Why does acetone [(CH₃)₂C=O, dipole moment = 2.69 D] have a larger dipole moment than phosgene [Cl₂C=O, dipole moment = 1.17 D]? **Note:** Electronegativity values are C = 2.5, Cl = 3.2, O = 3.5, H = 2.2. **Options:** **A.** In phosgene, the resultant of the C-Cl bond dipole moments is opposite to and partially cancels the C=O dipole moment. In acetone, the resultant of the C-H bond dipole moments (although small) adds to the C=O dipole moment. **B.** Phosgene has a tetrahedral geometry while acetone possesses a trigonal geometry. **C.** The C-H bond dipole moments of acetone are greater in magnitude than C-Cl bond dipole moments of phosgene. **D.** In phosgene the C-Cl bond dipoles cancel out each other.
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