Zadanie 14
Which general formula describes a homologous series of unsaturated compounds? A. CnH2n+1OH B. CnH2n−2 C. CnH2n+1Br D. CnH2n+2
Homologous series and general formulas
Define a homologous series and write the general formula for alkanes, alkenes, alkynes, halogenoalkanes, alcohols, aldehydes, ketones, carboxylic acids, ethers, amines, amides and esters, recognising members of each series from their structures.
Tę umiejętność sprawdza 18 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 18 Otwórz w wyszukiwarce z filtrami
Zadanie 6c
But-2-ene and other alkenes serve as starting materials for a wide range of compounds. (i) Predict the product formed when but-2-ene reacts with bromine. (ii) Outline why but-2-ene, unlike butane, readily undergoes this type of reaction. (iii) State the…
- Tabela do uzupełnienia
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…
- Tabela do uzupełnienia
- Materiał graficzny
Zadanie 24
Which compounds belong to the same homologous series? A. CH3CH2COOH, CH3COOH, CH3CH2CH2COOH B. CH3COCH3, CH3CH2CHO, CH3CH2COCH3 C. CH3CH2OH, CH3CHO, CH3COOH D. CH3CH2Cl, CH2=CHCl,…
Zadanie 26
Which of the statements are correct for propan-1-ol and butan-1-ol, which belong to the same homologous series? I. They differ by one CH2 unit. II. They have the same empirical formula. III. They have the same general formula, CnH2n+1OH. A. I…
Zadanie 3a
Halogenoalkanes form a homologous series. (i) Outline the meaning of homologous series. (ii) State the preferred IUPAC name of each of the two compounds shown. (iii) But-1-ene can be polymerized. Draw a section of the resulting polymer showing two repeating…
- Materiał graficzny
Zadanie 5b
The structures of three natural compounds X, Y and Z are shown. (i) Identify one functional group present in all three compounds. (ii) Identify one functional group present only in compound Z.
- Materiał graficzny
Zadanie 6c
Propanoic acid reacts with methanol to produce an ester. Draw the full structural formula of the organic product.
Zadanie 1a
Propanoic acid, CH3CH2COOH, is the next member of the series. Outline two characteristics that make ethanoic acid and propanoic acid members of the same homologous series.
Zadanie 1a
Outline the meaning of the term “homologous series”, with reference to the carboxylic acids.
Zadanie 3a
State the name of the reagent that is heated with ethanoic acid to form this ester.
Zadanie 3d
State the homologous series to which CH3COOCH3 belongs.
Zadanie 3a
State the name of the reagent that is heated with propanoic acid to form this ester.
Zadanie 3d
State the class of organic compounds to which CH3CH2COOCH3 belongs.
Zadanie 4b
State two features that justify placing ethene and propene in the same homologous series.
Zadanie 25
Which compounds are members of the same homologous series? A. Methanol, methanal, methanoic acid B. Ethane, ethene, ethyne C. Butan-1-ol, butan-2-ol, 2-methylpropan-2-ol D. Methanal, ethanal, propanal
Zadanie 26
Which set of formulas is a homologous series? A. CH4, C2H4, C3H4 B. C2H6, C3H6, C4H6 C. C3H8, C3H6, C3H4 D. C2H4, C3H6, C4H8
Zadanie 25
Which homologous series has the general formula CnH2nO2? A. Alcohols B. Aldehydes C. Ethers D. Carboxylic acids