Question

Va rog mult problemele 5 6 7 8

Answer 1

5/.

C-C-C-C-C-C,

C-C(CH3)-C-C-C ,

C-C-C(CH3)-C-C,

C-C(CH3)2-C-C,

C-C(CH3)-C(CH3)-C

=> 5 => D

6/.

1 L        x L

C3H8 + 5O2 --> 3CO2 + 4H2O

 22,4    5x22,4

=> x = 5 L O2

Vaer = 5Vo2 = 5x5 = 25 L aer

=> C.

7/.

10 L / 22,4 = 0,446 moli amestec C3H8 + C4H10

36 L / 22,4 = 1,607 moli CO2

 a moli               3a moli

C3H8 + 5O2 --> 3CO2 + 4H2O

  1                             3

b moli                     4b moli

C4H10 + 13/2O2 --> 4CO2 + 5H2O

  1                                  4

=> 3a + 4b = 1,607

      a  +  b = 0,446 => b = 0,446-a

=> 3a + 4(0,446-a) = 1,607

=> a = 0,177/1 = 0,177 moli C3H8

=> b = 0,446 - 0,177 = 0,269 moli C4H10

% volume = % molare la gaze

=> 0,269x100/0,446 = 60%

=> C.

8/.

CH4 + Cl2 + Br2 --> CH3Cl + CH3Br + CH2Cl2 + CH2Br2 + CHCl3 + CHBr3 + CCl4 + CBr4 + CH2ClBr + CHCl2Br + CHBr2Cl + CCl3Br + CBr3Cl + CCl2Br2

=> C.