Umiejętności z tego działu sprawdza 79 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 41 z 54 arkuszy w bazie.
Compound X is a flavour compound that occurs in many plants. Its structure is shown below. (i) State the IUPAC name of compound X. (ii) State the name of the functional group represented by the C=O bond itself in compound X. (iii) Predict the size of the H–C=O…
Reactions of halogenoalkanes with hydroxide ions are an example of nucleophilic substitution. Deduce the equation, showing the movement of electrons with curly arrows, for the reaction of 1-chloropropane with aqueous potassium hydroxide.
Which functional groups are present in this molecule? A. Secondary amine, hydroxyl, alkoxy B. Tertiary amine, alcohol, ketone C. Tertiary amine, hydroxyl, alkoxy D. Secondary amine, alcohol, ketone
Which of the following are structural isomers of the compound shown? I. 2-methylbut-2-ene II. 2-methylpent-1-ene III. pent-2-ene A. I and II only B. I and III only C. II and III only D. I, II and III
Which of these molecules are isomers of each other? I. Butanal II. 2-methylpropan-1-ol III. Butan-2-ol A. I and II only B. I and III only C. II and III only D. I, II and III
What is the correct classification of the molecule shown? A. Carboxylic acid B. Ketone C. Ether D. Ester
Which general formula describes a homologous series of unsaturated compounds? A. CnH2n+1OH B. CnH2n−2 C. CnH2n+1Br D. CnH2n+2
When heated under reflux with excess acidified potassium dichromate(VI), how many of the structural isomers of the alcohol C5H11OH are oxidized to a carboxylic acid? A. 3 B. 7 C. 4 D. 8
Which compound is formed when CH3CH2CH(CH3)C≡CH reacts with excess H2(g) over a nickel catalyst? A. 3-methylpentane B. 2-methylpentane C. 2,3-dimethylbutane D. hexane
The structure of galantamine is shown below. (i) State the type of structural formula shown. (ii) State the name of the functional group that contains the nitrogen atom. (iii) Outline the effect of this functional group on the pH of water in which galantamine…
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