Question

[An Sơ Hạ]

Câu 1 : Viết các phương trình phản ứng :

a) Buta-1,3-dien + H₂ ( Ni,t°C )

b) Buta-1,3-dien + Br₂ ( dư )

c) Buta--1,3--dien + HBr ( 40°C )

d) Isopren + H₂ ( Ni, t° )

e) Isopren + Br₂ ( dư )

Câu 2 : Viết CTCT và gọi tên hidrocacbon có CTPT : C₂H₂ , C₃H₄ , C₄H₆ , C₅H₈

Answer 1

[B.Thị Anh Thơ]

Câu 1:

a. \(CH_2=CH-CH=CH_2+2H_2\underrightarrow{^{to,Ni}}CH_3-CH_2-CH_2-CH_3\)

b. \(CH_2=CH-CH=CH_2+Br_2\rightarrow Br-CH_2-CH\left(Br\right)-CH=CH_2\)

c. \(CH_2=CH-CH=CH_2+HBr\underrightarrow{^{40oC}}CH_3-CH=CH-CH_2-Br\)

d. \(CH_2=C\left(CH_3\right)-CH_2-CH_3+H_2\underrightarrow{^{Ni,to}}CH_3-C\left(CH_3\right)=CH-CH_3\)

e. \(CH_2=C\left(CH_3\right)-CH_2-CH_3+Br_2\rightarrow Br-CH_2-C\left(Br\right)\left(CH_3\right)-CH_2-CH_3\)

Câu 2:

- C2H2

\(CH\equiv CH\) : axelilen

- C3H4

\(CH\equiv C-CH_3\) : prop - 1 - in

- C4H6

\(CH\equiv C-CH_2-CH_3\) : but - 1 - in

\(CH_3-C\equiv C-CH_3\) : but - 2 -in

- C5H8

\(CH\equiv C-CH_2-CH_2-CH_3\) : pent - 1 - in

\(CH_3-C\equiv C-CH_2-CH_3\) : pent - 2 - in

\(CH\equiv C-CH\left(CH_3\right)-CH_3\) : 3 - metylbut - 1- in