Chemistry Questions: Bonding and Properties
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Questions and Answers

What is the primary factor responsible for the high melting points of ionic solids?

  • their large, positive lattice enthalpies
  • their high vapor pressures
  • their large, negative lattice enthalpies (correct)
  • the electronegativities of their constituent elements
  • What is the number of σ and π bonds in the trans-1,2-dicyanoethene molecule?

  • 5 σ, 3 π
  • 4 σ, 8 π
  • 7 σ, 5 π
  • 4 σ, 3 π (correct)
  • What is the hybridization of the two labeled C atoms in the trans-1,2-dicyanoethene molecule?

  • sp³
  • sp² (correct)
  • sp⁴
  • sp
  • What are the partial pressures of N₂(g) and H₂(g) in the decomposition of NH₃(g) in a closed vessel?

    <p>148 &amp; 296 torr</p> Signup and view all the answers

    What is the bond order and magnetic behavior of the C₂ molecule based on the valence MO diagram?

    <p>BO = 2, paramagnetic</p> Signup and view all the answers

    What happens to the volume of the air in the diving bell as it is lowered to the bottom of the lake?

    <p>It decreases</p> Signup and view all the answers

    What is the effect on the volume of a gas when the temperature is held constant?

    <p>The volume is unchanged</p> Signup and view all the answers

    What is the electronic geometry, molecular geometry, and valence hybridization of S, respectively, for the sulfite ion (SO32−)?

    <p>Trigonal planar, trigonal planar, sp2</p> Signup and view all the answers

    Under what conditions do gases exhibit the most ideal behavior?

    <p>High temperature and low pressure</p> Signup and view all the answers

    What is the partial pressure of the Ar after the stopcock between the two flasks is opened and the gases are allowed to fully mix?

    <p>477 mm Hg</p> Signup and view all the answers

    Which of the following behaviors is not characteristic of an ideal gas?

    <p>Gas particles are attracted to one another</p> Signup and view all the answers

    What is the density, in g/L, of SF6 gas at 0.500 atm and 300K?

    <p>2.97 g/L</p> Signup and view all the answers

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