Structural isomers

Chemia IBPaper 1A, maj 2026, TZ1wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 15

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

Chemia IBPaper 1A, maj 2026, TZ3wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 15

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

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Chemia IBPaper 1A, maj 2026, TZ3wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 34

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

Chemia IBPaper 2, maj 2025, TZ3wzorowane1 pktotwartełatwe (szac.)

Zadanie 4e

Draw the structural formula of one structural isomer of compound Y.

Chemia IBPaper 2, maj 2025, TZ1wzorowane7 pktotwarteśrednie (szac.)

Zadanie 8b

The compound X shown below occurs naturally in cocoa and coffee and is used as a flavouring agent. (i) State the name of the functional group found in compound X. (ii) Deduce the IUPAC name of X. (iii) Deduce how many signals the $\ce{^1H}$ NMR spectrum of X…

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Chemia IBPaper 2, listopad 2025, TZ1wzorowane6 pktotwarteśrednie (szac.)

Zadanie 3b

(i) Oil of vitriol, spirit of hartshorn and wood alcohol are old trivial names still occasionally used for chemical substances, and names like these can be a source of confusion in international scientific communication. Outline how the modern system of naming…

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Chemia IBPaper 2, listopad 2025, TZ3wzorowane5 pktotwarteśrednie (szac.)

Zadanie 3e

A compound used to make polymers, hexanedioic acid, can be produced by a series of reactions starting from cyclohexane. (i) Deduce how reactant A is related to hex-1-ene. (ii) For the C=O functional group present in intermediate C, state its structural…

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Chemia IBPaper 1A, listopad 2025, TZ1wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 19

Which pair of compounds correctly illustrates the stated type of isomerism? A. Positional isomerism: CH₃CH₂CHO and CH₃COCH₃ B. Functional group isomerism: CH₃CH₂CH₂CH₂OH and CH₃CH(OH)CH₂CH₃ C. Cis-trans isomerism: the two compounds…

• Materiał graficzny

Chemia IBPaper 2, specimen 2025wzorowane7 pktotwartetrudne (szac.)

Zadanie 6c

(i) Draw the structural formula of 2-chloropentane and that of the structural isomer in which the chlorine atom is attached to a tertiary carbon atom. (ii) Only one of the two isomers drawn in (c)(i) is chiral. Draw stereochemical formulas showing its two…

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Chemia IBPaper 1, listopad 2023, TZ1wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 32

How are the amine and the alcohol shown classified? A. primary amine and primary alcohol B. tertiary amine and secondary alcohol C. primary amine and secondary alcohol D. secondary amine and secondary alcohol

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Chemia IBPaper 1, listopad 2023, TZ2wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 32

Which option classifies compound X as an amine and compound Y as an alcohol correctly? A. Primary amine and primary alcohol B. Secondary amine and primary alcohol C. Tertiary amine and primary alcohol D. Secondary amine and tertiary alcohol

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Chemia IBPaper 1, maj 2022, TZ2wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 33

How many structural isomers of dichloropentane, C₅H₁₀Cl₂, can be formed by the free-radical substitution of CH₃CH₂CH₂CH₂CH₃ with excess Cl₂ in the presence of UV light? Ignore stereoisomers. A. 5 B. 7 C. 9 D. 12

Chemia IBPaper 1, listopad 2022wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 32

Which of the structures I, II and III are structural isomers of C₄H₈? A. I and II only B. I and III only C. II and III only D. I, II and III

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