IB DP Chemistry Reactivity 3.4 Electron-pair sharing reactions IB Style Question Bank HL Paper 1

Question

Which mechanism does benzene most readily undergo?

A Nucleophilic substitution

B Electrophilic substitution

C Electrophilic addition

D Free radical substitution

Answer/Explanation

Ans: B

Question

What is the mechanism for the reaction of propene with iodine in the dark?

A.     electrophilic addition

B.     electrophilic substitution

C.     free radical substitution

D.     nucleophilic substitution

Answer/Explanation

Markscheme

A

Examiners report

[N/A]

Question

Which statements about the chlorine free radical are correct?

I.     It has 18 electrons.

II.     It is an uncharged species.

III.     It is formed by homolytic fission.

A.     I and II only

B.     I and III only

C.     II and III only

D.     I, II and III

Answer/Explanation

Markscheme

C

Examiners report

[N/A]
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