1.
1) CH3-CH2-CH2-CH2-CH2-CH3, n-hexan
2) CH3-CH-CH2-CH2-CH3 , 2-metilpentan
CH3
3) CH3-CH2-CH-CH2-CH3 , 3-metilpentan
CH3
CH3
4) CH3-C--CH2-CH3 , 2,2-dimetilbuan
CH3
5) CH3-C---CH---CH3 , 2,3-dimetilbuan
CH3 CH3
2.
5) < 4) < 3) < 2) < 1)
---------------------------> creste p.f.oC