What happens when hydrogen (H₂) is added to an alkene in the presence of a catalyst?
Alkene converts into an alkane
Alkenes have a carbon-carbon double bond.
In the presence of a catalyst such as nickel, hydrogen adds across this double bond (hydrogenation), turning the alkene into a saturated alkane, e.g. C2H4 + H2 → C2H6.
This is an addition reaction, not substitution.
Hence, the answer is that the alkene converts into an alkane.
Similar Questions
What do methane, ethane and propane represent in the study of carbon compounds?
Which property is most affected if the length of the carbon chain in an alkane increases?
A teacher asks students to draw the structure of butane and isobutane. What is the main difference between these two molecules?
What is the general formula for alkanes with 'n' carbon atoms?
Which among the following molecular formulae of organic compounds does NOT represent a ring structure?
Why do higher homologues of alkanes produce multiple products when they react with chlorine in a substitution reaction?
Select the correct option regarding the following two statements labelled Assertion (A) and Reason (R).
Assertion (A): Unsaturated hydrocarbons give a yellow flame with black smoke.
Reason (R): They burn completely when oxygen is insufficient.
Unsaturated hydrocarbons usually undergo which of the following reaction mechanisms?
Which method would be most appropriate to distinguish between saturated and unsaturated carbon compounds in a laboratory setting?
Which of the following statements about a homologous series are CORRECT?
(1) All members have the same general formula.
(2) Each successive member differs by a \(-CH_2-\) group.
(3) Physical properties remain identical for all members.
Important Questions from Hydrocarbons
Which of the following base is found in soap?
Which one of the following is the general formula of Alkenes?
- \({\rm{C}}{{\rm{H}}_3}{\rm{COOH}}\mathop \to \limits^{LiAI{H_4}} {\rm{A}}\mathop \to \limits^{PC{I_5}} {\rm{B}}\mathop \to \limits^{alc.KOH} {\rm{C}}\) Homologue of ‘C’ in the above reaction is:
Maximum quantity of carbon is present in
Which of the following pair gives 1° carbonium ion by hydrolysis of C-Br bond?
