The general formula for alkenes is:______________?
Correct answer: C. CnH2n
- A. CnH2n+1
- B. CnH2n+2
- C. CnH2n
- D. CnH2n-2
Explanation
An open-chain alkene with one carbon-carbon double bond has the general formula CnH2n, because the double bond removes two hydrogen atoms compared with an alkane, CnH2n+2. Students may choose CnH2n+2 by recalling the alkane formula instead of the alkene formula.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Alkenes
Alkenes are unsaturated hydrocarbons containing a carbon-carbon double bond with sigma and pi components and restricted rotation. Their reactions include electrophilic addition of hydrogen, halogens, hydrogen halides and water, with Markovnikov orientation, oxidation, combustion and polymerisation, while their preparation commonly involves elimination from alkyl halides or alcohols.
Practise Chemistry of Hydrocarbons
1,091 free Chemistry of Hydrocarbons MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Alkenes questions
Position of double bond in an organic compound is determined by ___________?
O3 reacts with C2H4 to form ozonide, while on further hydrolysis it forms _________?
In the presence of Zn, Hydrolysis of ozonide of 1-butene gives:_____________?
Ethene is the first member of __________?
O3 reacts with CH2CH2 to form ozonide. On hydrolysis it forms
Electromeric effect is ____________?