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Đáp án B
•Có 5 CTCT thỏa mãn là CH2=CH-CH2-CH2-CH3, CH3-CH=CH-CH2-CH3,
CH2=CH-CH(CH3)2, CH2=C(CH3)-CH2-CH3, (CH3)2C=CH-CH3
$C_5H_{10}$
C=C-C-C-C: Pent-1-en
C-C=C-C-C: Pent-2-en
C=C(C)-C-C: 2-metylbut-1-en
C=C-C(C)-C: 3-metylbut-1-en
C-C(C)=C-C: 2-metylbut-2-en
$C_6H_{12}$
C=C-C-C-C-C: hex-1-en
C=C(C)-C-C-C: 2-metylpent-1-en
C=C-C(C)-C-C: 3-metylpent-1-en
C=C-C-C(C)-C: 4-metylpent-1-en
C=C(C)-C(C)-C: 2,3-đimetylbut-1-en
C=C-C(C)(C)-C: 3,3-đimetylbut-1-en
C-C=C-C-C-C: hex-2-en
C-C(C)=C-C-C: 2-metyl-pent-2-en
C-C=C(C)-C-C: 3-metyl-pent-2-en
C-C(C)=C(C)-C: 2,3-đimetylbut-2-en
C-C-C=C-C-C: hex-3-en
C-C=C-C(C)-C: 4-metylpent-2-en
C=C(C-C)-C-C: 2-etylbut-1-en
a, \(CH_2=CH-CH_2-CH_3\): But - 1 - en
\(CH_3-CH=CH-CH_3\): But - 2 - en
b, \(CH_2=CH-CH_2-CH_2-CH_3\): Pent - 1 - en
\(CH_3-CH=CH-CH_2-CH_3\): Pent - 2 - en
\(CH_2=C\left(CH_3\right)-CH_2-CH_3\): 2 - metylbut - 1 - en
\(CH_3-C\left(CH_3\right)=CH-CH_3\): 2 - metylbut - 2 - en
\(CH_2=CH-CH\left(CH_3\right)-CH_3\): 3 - metylbut - 1 - en
Đáp án B
Các đồng phân cấu tạo mạch hở ứng với công thức C 5 H 10 là:
Đáp án B