IBChemistry: HLDPTopic Questions14. Chemical Bonding & Structure (HL only)14.2 Further Aspects of Bonding

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First teaching 2014

Last exams 2024

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Further Aspects of Bonding (DP IB Chemistry: HL)

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14.2 Further Aspects of Bonding

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14.2 Further Aspects of Bonding

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1
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Which compound contains delocalised electrons?

  • Cyclohexane, C6H12

  • Cyclohexene, C6H10

  • Benzene, C6H6

  • Cyclohexanol, C6H11OH

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2
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Which structure does not show resonance?

  • Carbonate ion, CO32-

  • Hydroxide ion, OH-

  • Ethanoate ion, CH3COO-

  • Nitrate ion, NO3-

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3
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Which of the following cannot catalyse the decomposition of ozone, O3, to oxygen?

  • Cl

  • NO

  • O

  • CCl4

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4
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Which is the correct description of how an sp2 orbital is formed?

  • One s-orbital mixes with three p-orbitals

  • Two s-orbitals mixes with two p-orbitals

  • One s-orbital mixes with two p-orbitals

  • One s-orbital mixes with one p-orbital

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5
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The structure of glycine is shown below:

glycine-structure-ib-hl-mcq-14-2-e-q5

What is the correct number of sp2 and sp3 hybridized atoms in glycine?

  Number of sp2 hybridised atoms Number of sp3 hybridised atoms
A. 8 2
B. 2 8
C. 3 2
D. 2 3

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    11 mark

    Which species contain delocalised electrons?


    q1_14-2_ib_hl_medium_mcq

    • I and II only

    • I and III only

    • II and III only 

    • I, II and III

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    21 mark

    Which combination describes the PH4+ ion?

     

    Molecular geometry

    Central atom hybridisation

    A

    Tetrahedral

    sp3

    B

    Square planar

    sp3

    C

    Tetrahedral

    sp2

    D

    Square planar

    sp2

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      31 mark

      Which statement is correct?

      • O3 bond dissociation occurs at a longer wavelength of light than O2 bond dissociation.

      • O3 bond dissociation occurs at a higher energy than O2 bond dissociation.

      • O3 bond lengths are shorter than O2 bond lengths.

      • O3 bond dissociation occurs at a higher frequency of light than O2 bond dissociation.

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      41 mark

      What is the hybridisation of carbon and oxygen in methanol?

      q4_14-2_ib_hl_medium_mcq

       

      Hybridisation of C

      Hybridisation of O

      A

      sp2

      sp2

      B

      sp2

      sp

      C

      sp

      sp2

      D

      sp3

      sp3

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        51 mark

        Which species have delocalised π electrons? 

        1.   CH3COCH3
        2.   NO2-
        3.   CO32-

        • I and II only 

        • I and III only 

        • II and III only

        • I, II and III

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        1
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        Which species can be represented with only one Lewis structure?

        • H2PO4-

        • O3

        • CH3COCH3

        • 1,3 cyclohexadiene

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        2
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        In which group do both compounds contain delocalised electrons?

        • K2CO3 and cyclohexene, C6H10

        • KOH and methybenzene, C7H8

        • KHCO3 and buta-1,3-diene, C4H6

        • Methanol and sodium methanoate, HCOONa

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        3
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        Which of the following are intermediate species in the catalytic depletion of ozone?

        I.   ClO•

        II.  NO•

        III. NO2•

        • I and II only

        • I and III only

        • II only

        • I, II and III

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        4
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        Which is not a correct statement about sp3 hybridised carbons?

        • They can form sigma or pi bonds

        • They have the electron arrangement 1s22s12p3

        • They have four bonding orbitals of equal energy

        • The bonding orbitals have bevelled 1 fourth s character and bevelled 3 over 4 p character

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        5
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        The structure of the painkiller paracetamol, often known as acetaminophen, is shown below:

        paracetamol-structure-ib-hl-mcq-14-2-h-q5

        Which of the following is not present in the structure?

        • 5 lone pairs

        • 7 atoms with bond angles of 120o around them

        • 8 atoms with sp2 hybrid orbitals

        • 16 sigma (σ) bonds

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