Workshop INTERMOL key_1

Workshop INTERMOL key_1 - NAMES_ INTERMOLECULAR FORCES 1....

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NAMES____________________________________________________________ INTERMOLECULAR FORCES 1. Consider the following compounds: bp( º C) mp( º C) H vap (kJ/mol) a. benzene 80 6 33.9 b. naphthalene 218 80 51.5 c. carbon tetrachloride 76 -23 31.8 d. acetone 56 -95 31.8 e. acetic acid 118 17 39.7 f. benzoic acid 249 122 68.2 a) For each compound, list the types of intermolecular forces that are present. a. LDF b. LDF c. LDF d. LDF, DD e. LDF, DD, HB f. LDF, DD, HB b) List the compounds in order of decreasing intermolecular interaction strength. f > b > e > a > c > d c) Rationalize the following: *The strength of the intermolecular forces of naphthalene. This is a large planar molecule. There is an extensive flat surface for two naphthalene molecules to interact at close range. The flat shape is a large factor in why the LDF ends up so strong. *The molecular weight of benzene is 78, while the molecular weight of carbon tetrachloride is 154. In contrast, the boiling point of benzene is 80
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This note was uploaded on 02/04/2011 for the course CHEM 102 taught by Professor Peterpastos during the Fall '08 term at CUNY Hunter.

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Workshop INTERMOL key_1 - NAMES_ INTERMOLECULAR FORCES 1....

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