Addition Reactions (Leaving Cert Chemistry): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the key feature of addition reactions?
What is the key feature of addition reactions?
Atoms added across double bond
Which type of organic compound is particularly important for addition reactions?
Which type of organic compound is particularly important for addition reactions?
Alkenes
What happens to a halogen molecule when it approaches an alkene?
What happens to a halogen molecule when it approaches an alkene?
It becomes polarised
What acts as a nucleophile in the first step of halogen addition?
What acts as a nucleophile in the first step of halogen addition?
electrons in C=C
What type of fission occurs when the halogen molecule breaks during addition?
What type of fission occurs when the halogen molecule breaks during addition?
Heterolytic fission
Which intermediate is more likely in symmetrical alkene addition?
Which intermediate is more likely in symmetrical alkene addition?
Cyclic chloronium ion
What is the main product when ethene reacts with ?
What is the main product when ethene reacts with ?
1,2-dichloroethane
What side product forms when ethene reacts with in water?
What side product forms when ethene reacts with in water?
2-chloroethanol
What is the reactivity order for hydrogen halides adding to alkenes?
What is the reactivity order for hydrogen halides adding to alkenes?
HI > HBr > HCl > HF
Why does HI react fastest with alkenes?
Why does HI react fastest with alkenes?
Weakest H-X bond
What is the bond enthalpy of HF?
What is the bond enthalpy of HF?
567 kJ mol
Which factor increases the rate of initial electrophilic attack?
Which factor increases the rate of initial electrophilic attack?
Greater bond polarity