How many alkenes on catalytic hydrogenation g | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Isopentane is $2$-methylbutane,which has the molecular formula $C_5H_{12}$.Catalytic hydrogenation of an alkene adds $H_2$ across the double bond,

Vedclass · Accepted Answer

$3$

Vedclass · Answer

(B) Isopentane is $2$-methylbutane,which has the molecular formula $C_5H_{12}$.Catalytic hydrogenation of an alkene adds $H_2$ across the double bond,so the starting alkene must have the molecular formula $C_5H_{10}$.The isomers of $C_5H_{10}$ that yield $2$-methylbutane upon hydrogenation are:$1$. $3$-methylbut-$1$-ene: $(CH_3)_2CH-CH=CH_2 + H_2 \xrightarrow{Pt} (CH_3)_2CH-CH_2-CH_3$$2$. $2$-methylbut-$2$-ene: $(CH_3)_2C=CH-CH_3 + H_2 \xrightarrow{Pt} (CH_3)_2CH-CH_2-CH_3$$3$. $2$-methylbut-$1$-ene: $CH_2=C(CH_3)-CH_2-CH_3 + H_2 \xrightarrow{Pt} CH_3-CH(CH_3)-CH_2-CH_3$Thus,there are $3$ such alkenes.

How many alkenes on catalytic hydrogenation give isopentane as a product?

Similar Questions

Which of the following compounds gives $CH_3CHO$ and $CH_3CH_2CHO$ upon ozonolysis followed by hydrolysis?

The number of acyclic structural isomers (including geometrical isomers) for pentene $(C_5H_{10})$ are $......$

The olefin which on ozonolysis gives $CH_3CH_2CHO$ and $CH_3CHO$ is

$A$ reagent used to test for unsaturation of alkene is

The Diels-Alder reaction will not take place with which of the following reactants?

Vedclass Test Series

Exam Paper Generator

Online Exam Module