1.
alcanii raspund la formula CnH2n+2,
d.relativa = miu/Vm, Vm = 22,4
=> miu.alcan = d.rel. x Vm = 2,589 x22,4 = 58 g/mol
=> 14n+2 = 58 => n = 4 => C4H10, butan
2.
CH3-CH-CH-CH2-CH3
H3C- -CH3
3.
CH3
CH3-C-CH3 , CH3-CH-CH2-CH3 , CH3-CH2-CH2-CH2-CH3
CH3 CH3
2,2-dimetilpropan 2-metilbutan n-pentan
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sensul cresterii p.f.oC