va rog cât mai repede dau coroana și ma abonez!!!
Răspunsuri la întrebare
1.
a) aici este o greseala
cred ca s-a vrut scris 2,3-dietil-3-metil-4-izopropiloctan
CH2-CH3
H3C---CH---CH---CH---CH2---CH2---CH2---CH3
CH2-CH3 CH-CH3
CH3
b)
CH2-CH3
H3C---CH2---CH---CH2---CH3
c)
CH3 CH3
H3C---C---CH2---CH---CH2---C---CH2---CH3
CH3 CH-CH3 CH3
CH3
d)
CH3 CH3 CH3
H3C---CH---CH---CH---CH---CH2---CH3
CH2-CH3
2.
C6H14
H3C---CH2---CH2---CH2---CH2---CH3 , n-hexan
H3C---CH---CH2---CH2---CH3 , 2-metilpentan
CH3
CH3
H3C---C---CH2---CH3 , 2,2-dimetilbutan
CH3
CH3
H3C---CH---CH---CH3 , 2,3-dimetilbutan
CH3
3.
a-2
b-etan
c-11
d-substitutie
4-d
5-d
6.
alcani raspund la form. generala = CnH2n+2
miu = 14n+2
100% ............................ 14n+2
82,75% C .................. 12n
=> n = 2/0,5 = 4 => C4H10, butan
CH3-CH2-CH2-CH3, n-butan
CH3-CH-CH3
CH3 , 2-metilpropan (izobutan)
7.
CH3
neopentan CH3---C----CH3
CH3
2-metilbutan CH3---CH---CH2--CH3
CH3
neopentan = 9,4oC
2-metilbutan = 27,8oC
8.
M.CH4 = 16 g/mol
1 mol CH4 .................. 16g .................... 212 kcal
m g ...................... 1908 kcal
= 144g CH4
9.
CH3-CH2-CH2-CH2-CH3 --(<650oC)--> CH3-CH2-CH=CH2 + CH4
CH3-CH=CH2 + CH3-CH3
CH2=CH2 + CH3-CH2-CH3
--(>650oC)--> CH2=CH-CH2-CH2-CH3 + H2
CH3-CH=CH-CH2-CH3 + H2
10.
a. CH4 + 4Cl2 --lumina--> CCl4 + 4HCl
b.
4 moli V L
CH4 + 4Cl2 --lumina--> CCl4 + 4HCl
1 4x22,4
=> V = 4x22,4/1 = 89,6 L Cl2
c. CCl4 = solvent in extractii si agent ignifug pentru stingatoare de incendiu