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Organic Chemistry · Part 3 of 3
18 exam-style questions with model answers, plus 24 quick multi-choice questions — every question on this part of the standard, grouped by the 6 pages of notes they come from.
Write a full answer before you reveal the model one. That comparison is where the learning happens.
Name the product and state the colour change when ethanol is warmed with acidified permanganate.
Explain why butan-1-ol is oxidised by acidified dichromate but 2-methylpropan-2-ol is not. Include the colour changes.
Three bottles contain butan-1-ol, butan-2-ol and 2-methylpropan-2-ol. Devise a series of tests that would identify all three, giving observations and justifying each step from the structures involved.
Name a reagent that converts ethanol into chloroethane, and name the reaction type.
Write an equation for the reaction of propan-1-ol with HBr, name the product, and explain why the reaction is classed as a substitution.
A student needs to prepare 1-iodobutane from butan-1-ol and proposes using PCl3 followed by adding potassium iodide. Evaluate this proposal, explain why it will not give the required product, and describe a better route.
Give the reagent and the organic product when bromoethane reacts with aqueous potassium hydroxide.
Write an equation for the reaction of 1-bromopropane with ammonia, name the product and explain why this reaction is important in organic synthesis.
2-bromopropane is treated with potassium hydroxide. Explain how the choice of solvent completely changes the outcome, giving both products, both reaction types and equations, and explain why a chemist must always specify the conditions.
State the conditions needed to convert ethanol into ethene, and name the type of reaction.
Ethanol can be converted to ethene. Give the equation and conditions, and explain what is removed and what forms in its place.
Pentan-2-ol is heated with concentrated sulfuric acid. Identify all the alkenes that could form, name them, state which is the major product with justification, and explain how the number of geometric isomers affects the total number of distinct products.
State what is observed when solid sodium carbonate is added to ethanoic acid, and name the gas produced.
Explain, with an equation, why methylamine (CH3NH2) reacts with hydrochloric acid.
Ethanol, ethanoic acid and ethanamine are three colourless liquids of similar size. Describe how simple tests could distinguish all three, and explain the results in terms of the functional group present in each.
State the reagent and conditions needed to convert bromoethane into ethanol, and name the reaction type.
Show how ethene can be converted into ethanoic acid, giving the reagents, conditions and reaction type for each step.
A chemist has a supply of but-1-ene and needs to prepare butan-1-amine. Devise a route, giving reagents, conditions and reaction types, and evaluate the route by discussing product selectivity and overall yield. Suggest one improvement.