Unit 6: Reactivity 3: What Are the Mechanisms of Chemical Change?
Topic 6.4: Electron-Pair Sharing Reactions Questions
Practice 4 exam-style questions for IB Chemistry Topic 6.4. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1Describe3 marks
• Aimnova practice
Bromoethane, CH3CH2Br, is warmed with aqueous sodium hydroxide and undergoes nucleophilic substitution.
Use curly arrows to describe the movement of electron pairs in this reaction, and identify the leaving group. [3]
Use curly arrows to describe the movement of electron pairs in this reaction, and identify the leaving group. [3]
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Unlock Question2Explain3 marks
• Aimnova practice
2-bromopropane, CH3CHBrCH3, is heated with warm aqueous potassium hydroxide.
State the type of reaction taking place, identify the organic product, and explain why an iodoalkane would react faster than this bromoalkane. [3]
State the type of reaction taking place, identify the organic product, and explain why an iodoalkane would react faster than this bromoalkane. [3]
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Unlock Question3Predict3 marks
• Aimnova practice
Ethene, CH2=CH2, is bubbled through orange bromine water at room temperature.
Predict the organic product, state what would be observed, and outline why ethene readily undergoes this reaction. [3]
Predict the organic product, state what would be observed, and outline why ethene readily undergoes this reaction. [3]
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Unlock Question4Describe3 marks
• Aimnova practice
But-1-ene, CH3CH2CH=CH2, reacts with hydrogen bromide, HBr.
State the type of reaction, use curly arrows to describe the electron-pair movement, and identify which species is the electrophile, with a reason. [3]
State the type of reaction, use curly arrows to describe the electron-pair movement, and identify which species is the electrophile, with a reason. [3]
Markscheme and model answer locked
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