Question

Numarul de amine izomere care contin 65,75 % C , 15,07 % H si 19,18 % N si care prezinta activitate optica este ? ( rasp. a) 1. )

Answer 1

C : 65,75 /12 = 5,48 / 1,37 = 4
H : 15,07/1 =  15,07 / 1,37 = 11
N : 19,18/14 = 1,37 / 1,37 = 1
formula moleculara : C4H11N
a) amine primare : CH3-CH2-CH2-CH2-NH2        CH3-CH(CH3)-CH2-NH2 
CH3-CH2-CH*(CH3)-NH2
b) amine secundare : CH3-CH2-CH2-NH-CH3    CH3CH(CH3)- NH-CH3   
CH3-CH2-NH-CH2-CH3
c) amine tertiare : CH3-CH2-N(CH3)2
prezinta izomerie optica doar CH3-CH2-CH*(CH3)-NH2