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Unformatted text preview: 3 -5 continued ( b) �
n -heptane 2-methylhexane 3 , 3 -di methylpentane T�
1 2,3-di methylpentane 2,4-di methylpentane ��
2 3-methylhexane 2 ,2-dimethylpentane 3 -ethylpentane 2,2,3 -trimethylbutane 3-6 For thi s problem, the carbon numbers in the substituents are indicated in italics. (a)
2 (b) - CHCH3
I-methylethyl common name (d)
i sopropyl 2 -methylpropyl common name i sobutyl
= 1 I 3 (c) 2 0/ C H3
1 - CHCH2CH3 2 3 I -methylpropyl common name = sec-butyl CH3 30 l ,l- di methylethyl common name = r -butyl or rerr-butyl
3-7 (a) (b) /C 1 CH3 .-! � CH3 3 -8 Once the number of c arbons is determined, C nH2n+2 g i ves the formula. (a) C IOHn ( b) C 1sH32 3 -9 (a) (lowest b.p.) hexane (b) ( CH3hC-C(CH3h (lowest b.p.) 3-10 ( a) (lowest m.p . ) hexane (b) octane
< < < < < octane < d ecane (highest b.p.) -molecular weight
< CH3CH2C(CH3hCH2CH2CH3 octane -branching (highest b.p.) octane d ecane (highest m.p.) -molecu l ar weight
< C H3CH2C(CH3hCH2CH2CH3 (CH3hC-C(CH3h -branching
(hi ghest m . p . ) ( lowest m . p . ) 46 ...
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This note was uploaded on 02/27/2010 for the course CHEM 140 taught by Professor Wade during the Spring '10 term at Whitman.
- Spring '10