a) %C:%H=80:20
-->n C:n H=80/12 :20/1
=6,667:20
=1:3
CTĐG:CH3
M=30-->CTHH: C2H6
b) %C: % H:% Cl=23,8:5,9:70,3
n C: n H : n Cl = 123,8/12 : 5,9/1 :70,3/35,5
= 1,98: 5,9:1,98
=1:3:1
PTK=50,5
-->CTHH: CH3Cl
a) %C:%H=80:20
=>n C:n H=80/12 :20/1
=6,667:20
=1:3
vậy CTĐG:CH3
M=30-->CTHH: C2H6
b) %C: % H:% Cl=23,8:5,9:70,3
n C: n H : n Cl = 123,8/12 : 5,9/1 :70,3/35,5
= >1,98: 5,9:1,98
=>1:3:1
PTK=50,5
-->CTHH: CH3Cl