DP Chemistry (first assessment 2025)

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Question 22M.2.SL.TZ1.3d(i)

Date	May 2022	Marks available	[Maximum mark: 1]	Reference code	22M.2.SL.TZ1.3d(i)
Level	SL	Paper	2	Time zone	TZ1
Command term	Draw	Question number	d(i)	Adapted from	N/A

d(i).

[Maximum mark: 1]

22M.2.SL.TZ1.3d(i)

(d(i))

Draw the structural formula of the alkene required.

[1]

Markscheme

Examiners report

Few candidates could correctly eliminate water to deduce the identity of the required reactant.

Syllabus sections

Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.4—Electron-pair sharing reactions » Reactivity 3.4.5—Alkenes are susceptible to electrophilic attack because of the high electron density of the carbon–carbon double bond. These reactions lead to electrophilic addition. Deduce equations for the reactions of alkenes with water, halogens, and hydrogen halides.