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ASChemistryCIEExam Questions13. An Introduction to AS Level Organic Chemistry13.1 Formulas, Functional Groups & the Naming of Organic Compounds

Formulas, Functional Groups & the Naming of Organic Compounds (CIE AS Chemistry)

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13.1 Formulas, Functional Groups & the Naming of Organic Compounds

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13.1 Formulas, Functional Groups & the Naming of Organic Compounds

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11 mark

What is the correct formula for 1-fluro-3-methyl-2-butene?

A

Structural

CH2FCH2C(CH3)CH3

B

Empirical

C5H9F

C

Displayed

3-1-e-7a

D

Skeletal

    3-1-e-7b

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    21 mark

    Which of the following molecules are hydrocarbons?

    6XkBEQnz_14

     

    1

    2

    3

    4

    A

    ✓

    ✓

    ⨯

    ⨯

    B

    ✓

    ✓

    ✓

    ✓

    C

    ✓

    ✓

    ✓

    ⨯

    D

    ⨯

    ⨯

    ⨯

    ✓

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      31 mark

      What is the identity of the functional group that is ringed in the molecule shown below?

      M3qovCdV_23

      • Aldehyde

      • Ketone

      • Carboxylic acid 

      • Alkene

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      41 mark

      What is the IUPAC name of the following molecule?

      At88VQh2_24

      • 2-chloro-3-methylpentane

      • 3-methyl-4-chloropentane

      • 2-ethyl-3-chlorobutane

      • 2-chloro-3-ethylbutane

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      11 mark

      Compound A, an organic compound with a molecular formula C6H12O2, is produced by the oxidation of compound B, molecular formula C6H14O.

      Which of the following functional groups does B contain?

      • Carboxyl (-COOH)

      • Carbonyl (C=O)

      • Hydroxyl (-OH)

      • Alkyl (RCOOR’)

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      21 mark

      What is the name of the following molecule?

      q5-medium-3-1-introduction-to-organic-chemistry

      • 2,3,3-tetramethylpentane

      • 3,3,5-trimethylhexane

      • 2,4,4,4-trimethylethylbutane

      • 2,4,4-trimethylhexane

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      31 mark

      Which of the molecules shown below contains an aldehyde functional group?

      • CH3CH2CH2COCH3

      • CH3CH2OOCH3

      • H3CH2OCH2CH2CH2CH3

      • CHOCH2CHOHCH2CH3

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      41 mark

      Xylitol is an artificial sweetener used in toothpastes and chewing gum to improve their taste without impairing dental hygiene.

      q1-medium-3-1-introduction-to-organic-chemistry

      Which functional groups could be produced if xylitol is oxidised under suitable conditions?

       

      Alkene

      Aldehyde

      Carboxylic acid

      Ketone

      A

      ✓

      ⨯

      ⨯

      ⨯

      B

      ⨯

      ✓

      ⨯

      ⨯

      C

      ⨯

      ✓

      ⨯

      ✓

      D

      ⨯

      ✓

      ✓

      ✓

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        11 mark

        Limonene is found in the peel of citrus fruits.

        q2-hard-3-1-introduction-to-organic-chemistry

        What is the correct empirical and molecular formula of limonene?

         

        Empirical Formula

        Molecular formula

        A

        C9H13

        C9H13

        B

        C5H9

        C10H18

        C

        C10H8

        C10H16

        D

        C5H8

        C10H16

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          21 mark

          What is the correct structural formula for 2,2-dibromo-4-methylhexane?

          • CH3CHBrCBr(CH3)CH2CH2CH3

          • CH3CBr2CH(CH3)CH2CH2CH3

          • CH3CHBrCH(CH3)CHBrCH2CH3

          • CH3CBr2CH2CH(CH3)CH2CH3

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          31 mark

          What is the correct IUPAC name for the following molecule?

          ocr-as-4-1h-mcq-q1-molecule

          • 4-ethyl-1,2,3-trimethylpent-2-ene

          • 3,4,5-trimethylhept-4-ene

          • 5-ethyl-3,4-dimethylhex-3-ene

          • 3,4,5-trimethylhept-3-ene

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          41 mark

          Which row is correct?

           

          IUPAC name

          General formula

          Skeletal formula

          Structural formula

          A

          2-methylpropanal

          CnH2n+1O

          2-methylpropanal

          CH3CH(CH3)CHO

          B

          4-methylpentylamine

          CnH2n+1NH2

           4-methylpentylamine

          CH3CH2CH2CH(CH3)CH2NH2

          C

          4-methylhexan-2-one

          CnH2nO

          4-methylhexan-2-one

          CH3CH2CH(CH3)CH2COCH3

          D

          ethyl propanoate

          CnH2nO2

           ethyl-propanoate

          CH3COOCH2CH2CH3

           

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