The Alkenes (Leaving Cert Chemistry): Flashcards
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What type of hydrocarbon are alkenes?
What type of hydrocarbon are alkenes?
Unsaturated hydrocarbons
What is the key feature defining alkenes?
What is the key feature defining alkenes?
Carbon-carbon double bond (C=C)
What is the general formula for alkenes?
What is the general formula for alkenes?
What suffix is used for alkene names?
What suffix is used for alkene names?
-ene
What is the molecular formula of ethene?
What is the molecular formula of ethene?
Why are alkenes more reactive than alkanes?
Why are alkenes more reactive than alkanes?
Pi bond in C=C is weaker and easily broken
Bond angle at sp³ hybridised carbon in alkenes
Bond angle at sp³ hybridised carbon in alkenes
Approximately
Bond angle at sp² hybridised carbon in alkenes
Bond angle at sp² hybridised carbon in alkenes
Approximately
Hybridisation of carbon with four single bonds
Hybridisation of carbon with four single bonds
sp³
Hybridisation of carbon in C=C double bond
Hybridisation of carbon in C=C double bond
sp²
Why does geometric isomerism occur in alkenes?
Why does geometric isomerism occur in alkenes?
No rotation around C=C double bond
What is the cis isomer arrangement?
What is the cis isomer arrangement?
Identical groups on same side of double bond
What is the trans isomer arrangement?
What is the trans isomer arrangement?
Identical groups on opposite sides of double bond