Electrophilic Addition in Alkenes (OCR A-Level Chemistry A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is an electrophile?
What is an electrophile?
A species that accepts an electron pair
Why are π-electrons in C=C bonds more reactive than σ-bond electrons?
Why are π-electrons in C=C bonds more reactive than σ-bond electrons?
They are less tightly held
What is heterolytic fission?
What is heterolytic fission?
Both electrons move to one atom
How many bonds does a carbocation have at the positively charged carbon?
How many bonds does a carbocation have at the positively charged carbon?
Three bonds
How does non-polar become an electrophile when approaching an alkene?
How does non-polar become an electrophile when approaching an alkene?
π-electrons induce a dipole in Br—Br
In Markownikoff's rule, where does the hydrogen attach in an unsymmetrical alkene?
In Markownikoff's rule, where does the hydrogen attach in an unsymmetrical alkene?
Carbon with more H atoms already attached
What is the correct order of carbocation stability?
What is the correct order of carbocation stability?
Tertiary > Secondary > Primary
Why are tertiary carbocations more stable than primary carbocations?
Why are tertiary carbocations more stable than primary carbocations?
More alkyl groups donate electrons
What is the major product when propene reacts with HBr?
What is the major product when propene reacts with HBr?
2-bromopropane
What species attacks the carbocation intermediate in electrophilic addition?
What species attacks the carbocation intermediate in electrophilic addition?
A negatively charged nucleophile