Curriculum

VCE Chemistry Units 3 and 4 - 5 Mock Pack

Getting Started - VCE CHEM U34 - 5 Practice Packs

0/3

Year 12 Guide - VCE CHEM U34 - 5 Practice Packs

0/3

Mock Exam 2 of 5 - VCE CHEM U34

0/3

Mock Exam 3 of 5 - VCE CHEM U34

0/3

Mock Exam 4 of 5 - VCE CHEM U34

0/3

Mock Exam 5 of 5 - VCE CHEM U34

0/3

Unit 4 Content: Organic Chemistry and Sustainability

0/5

After the Exam - VCE CHEM U34 - 5 Practice Packs

0/3

Unit 3 Content: How Can Chemical Processes Be Optimised?

0/5

Mock Exam 1 of 5 - VCE CHEM U34

0/3

Exam Technique - VCE Chemistry Units 3 and 4 - 5 Mock Pack

0/2

Advanced Depth - VCE Chemistry Units 3 and 4 - 5 Mock Pack

0/2

Text lesson

VCE-CHEM-U34 7.1 📋 Practice Exam 4: Question Paper

Practice Exam 4

VCE Chemistry | Advanced Organic Chemistry, Reaction Pathways, Spectroscopy & Analysis

✎ Complete ALL questions on paper before opening the Model Answers lesson. No notes. Aim for 1 minute per mark.

SHORT ANSWER

Question 1 (4 marks)

Outline a three-step synthesis of ethyl ethanoate from ethene. Include reagents, conditions and reaction types for each step.

✎ Write your answer on paper

Question 2 (4 marks)

A compound has molecular formula C₃H₆O and shows an IR absorption at 1715 cm⁻¹. The ¹H NMR shows two peaks: a triplet (3H) and a quartet (2H)… Actually for C₃H₆O: describe the structural identification.

✎ Write your answer on paper

Question 3 (4 marks)

Explain the difference between SN1 and SN2 mechanisms with reference to the substrate and stereochemistry.

✎ Write your answer on paper

Question 4 (4 marks)

In a mass spectrum of pentan-2-one (CH₃COCH₂CH₂CH₃, M=86), predict the m/z values of two likely fragment ions and explain their origin.

✎ Write your answer on paper

Question 5 (4 marks)

Describe the structure and bonding in the alpha-helix of a protein. What type of bond maintains the helical structure?

✎ Write your answer on paper

Question 6 (4 marks)

A sample contains a mixture of two organic compounds. Describe how you would use TLC and then preparative HPLC to separate and identify them.

✎ Write your answer on paper

Question 7 (4 marks)

Outline the mechanism for the acid-catalysed esterification of ethanoic acid with ethanol.

✎ Write your answer on paper

Question 8 (4 marks)

The ¹H NMR of ethanol (CH₃CH₂OH) shows three peaks. Describe the expected splitting patterns and relative integrations.

✎ Write your answer on paper

EXTENDED RESPONSE

Extended Response 1: Organic Synthesis Pathway

Question 9 (5 marks)

Extended Response 1: Organic Synthesis Pathway (a)
Starting from propan-1-ol, outline a synthesis of propanoic acid, then propanoyl chloride, and finally N-methylpropanamide. For each step, give reagents, conditions and the reaction type.

✎ Write your answer on paper

Extended Response 1: Organic Synthesis Pathway

Question 10 (3 marks)

Extended Response 1: Organic Synthesis Pathway (b)
Describe two methods used to confirm the identity of a pure organic compound.

✎ Write your answer on paper

Extended Response 1: Organic Synthesis Pathway

Question 11 (2 marks)

Extended Response 1: Organic Synthesis Pathway (c)
Explain what is meant by a ‘green chemistry’ approach to organic synthesis and give one example.

✎ Write your answer on paper

Extended Response 2: Spectroscopic Analysis

Question 12 (5 marks)

Extended Response 2: Spectroscopic Analysis (a)
An unknown compound C₄H₈O₂ has: IR peak at 1735 cm⁻¹ (strong); ¹H NMR shows peaks at δ 1.2 (triplet, 3H), δ 2.0 (singlet, 3H), δ 4.1 (quartet, 2H).
Identify the compound and justify your answer using all spectroscopic data.

✎ Write your answer on paper

Extended Response 2: Spectroscopic Analysis

Question 13 (3 marks)

Extended Response 2: Spectroscopic Analysis (b)
Explain how mass spectrometry (MS) can be used alongside NMR to provide complementary information in structure determination.

✎ Write your answer on paper

✓ Finished? Open the next lesson – Model Answers – to mark your work.