Exam2_03_ans - Form 0 Multiple Choice only one choice is...

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Form 0. Multiple Choice only one choice is necessary for a correct answer. (5 pts each) 1. Choose the statement that is incorrect about the following conformations of butane. C CH 3 CH 3 H H H H CH 3 H H H H CH3 CH 3 H H H H 3 C H CH 3 CH 3 H H H H CH 3 H H H H CH 3 CH 3 H H H H 3 C H staggered conformations eclipsed conformations (i) (ii) (iii) (iv) (v) (vi) (a) Conformation (i) is more stable than conformation (ii). (b) Conformation (v) is less stable than (ii) because of van der Waals repulsive forces (non bonded interactions) and torsional interactions. (c) Conformations (ii) and (iii) have different stabilities. (d) Conformation (iv) is the least stable of all the conformations shown. (e) Gauche conformations of butane are (ii) and (iii). 2. Choose the statement that is incorrect about the following structure of methylcyclohexane. A CH 3 H H H H H H H H H H H (a) The above structure is the most stable conformation of methylcyclohexane. (b) The above structure of methylcyclohexane is in the chair conformation. (c) There are six equatorial hydrogen atoms on the above structure. (d) All of the carbon atoms have a tetrahedral geometry. (e) There are two conformations of methylcyclohexane. 3. Choose from structures A-E the one that does not have the same absolute configuration as the structure shown below. C Cl H H Cl Cl H H Cl Cl H AB C D E Cl H = ?
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Exam2_03_ans - Form 0 Multiple Choice only one choice is...

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