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Răspunsuri la întrebare
a) NE=1 --------> formula: CnH2nO de contine 22,22%O
14n + 16.............16g oxigen
100%...................22,22%
unde n = 4 => C4H8O
b) 10 atomi
CnH(2n-2) + H2O -----> CnH2nO, unde 3n = 9=> n = 3, deci compusul este C3H6O
c) H:O=5:16
CnH(2n-2)O2 --- compus dicarbonilic
5/2n-2=16/32 => 2n-2 = 10=> n=6 ......compusul va fi C6H10O2
d) 69,76%C.....18,6%O........11,62%H
R--C(Cl2)--R -----H2O-----> R--CO--R (cetona sau aldehida)
C : 69,76/12 = 5,81 | 5
H: 11,62 | : 1,16 10 f.m. C5H10O
O: 18,6/16 = 1,16 | 1
e) CxHyOz, unde NE=5 => are nucleu aromatic compusul
=> CnH(2n-8)O, de unde reiese 14n+8
si stim ca 12x-16z=92 (x-carbonul, z-oxigenul) => z=16/16=> z=1 (un atom de oxigen)
12x - 16=92 => 12x = 108=> x = 9
compusul : C9H10O