DP Chemistry (first assessment 2025)

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Question EXM.1A.SL.TZ0.3

Date	May Example question	Marks available	[Maximum mark: 1]	Reference code	EXM.1A.SL.TZ0.3
Level	SL	Paper	1A	Time zone	TZ0
Command term		Question number	3	Adapted from	N/A

3.

[Maximum mark: 1]

EXM.1A.SL.TZ0.3

Which is the correct structural formula of this compound?

A. OCOCH₂CH₃

B. HCOOC₂H₅

C. HCOOCH₂CH₃

D. OCOHC₂CH₃

[1]

Markscheme

C

Syllabus sections

Structure 3. Classification of matter

Structure 3. Classification of matter » Structure 3.2—Functional groups: Classification of organic compounds » Structure 3.2.1—Organic compounds can be represented by different types of formulas. These include empirical, molecular, structural (full and condensed), stereochemical and skeletal. Identify different formulas and interconvert molecular, skeletal and structural formulas. Construct 3D models (real or virtual) of organic molecules.

Structure 3. Classification of matter » Structure 3.2—Functional groups: Classification of organic compounds