(Picture for 1a-3a) 1A. Which structure(s) is/are cis-1,3 dimethylcyclohexane? (
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Question
(Picture for 1a-3a)
1A. Which structure(s) is/are cis-1,3 dimethylcyclohexane? (checklist)
A
B
C
D
2A. Which structure(s) is/are the most stable? (checklist)
A
B
C
D
3A. The structure of estradiol (a steroid) is shown. Which statement(s) is/are true? (checklist)
All of the atoms in the rings are on the same plane
the atoms in ring 1 are on the same plane
the methyl group and -OH group are trans to each other
4A. Which H is more acidic on estradiol?
H on O bonded to Ring 1
H on O bonded to cyclopentane ring
same acidity
5A. Which O is more basic on estradiol?
O bonded to Ring 1
O bonded to cyclopentane ring
same basicity
6A. Which of the following are enantiomers? (checklist)
your ears
your feet
your nose
your thumbs
CH3 H3C CH3 CH3 OH HO EstradiolExplanation / Answer
1A . cis-1,3 dimethylcyclohexane
C , D are cis-1,3 dimethylcyclohexane
2A . B is more stable.
3A. the atoms in ring 1 are on the same plane
4A. H on O bonded to Ring 1 ( because ohenoxide ion is stabilised by resonance)
5A. O bonded to cyclopentane ring
6a. your ears , your feet, your thumbs
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