College Chemistry Multiple Choice Question Set 3
| 1. Which of the following is the correct electron-dot formula for water? | ||
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| 2. Which of the following is the correct electron-dot formula for carbon dioxide? | ||
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| 3. Which of the following represents the correct formula for aluminum oxide? | ||
| (a) | AlO | |
| (b) | Al2O3 | |
| (c) | AlO2 | |
| (d) | Al2O | |
| 4. Which of the bonds, shown by the dash, has the greatest polarity? | ||
| (a) | H-Cl | |
| (b) | H-NH2 | |
| (c) | H-OH | |
| (d) | H-SH | |
| 5. What is the major attraction between water molecules in the solid physical state? | ||
| (a) | dipole-dipole interactions | |
| (b) | electrostatic interactions between charged atoms | |
| (c) | hydrogen-bonds | |
| (d) | physical entanglement of the molecules | |
| 6. Which of the following is the correct name for NaHCO3? | ||
| (a) | sodium hydrogen carbonate | |
| (b) | sodium acetate | |
| (c) | nitrogen hydrogen carbonate | |
| (d) | sodium hydrogen carbon trioxide | |
| 7. What is the formal
charge of the oxygen atom of the following compound?
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| (a) | +3 | |
| (b) | +1 | |
| (c) | -2 | |
| (d) | -3 | |
| 8. The molecule N2 is isoelectronic with... | ||
| (a) | O2 | |
| (b) | F2 | |
| (c) | NO | |
| (d) | CN- | |
| 9. In which of the following compounds does ionic bonding predominate? | ||
| (a) | NH4Cl | |
| (b) | CO2 | |
| (c) | CH4 | |
| (d) | LiBr | |
| 10. Which of the following molecules contains only one non-bonding pair of valence electrons? | ||
| (a) | NH4+ | |
| (b) | HCN | |
| (c) | C2H4 | |
| (d) | N2 | |
| 11. The following
electron-dot formulas for carbon dioxide both satisfy the octet rule for
all of the atoms. Which of these structures is the better structure and
why is this the case?
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| (a) | "A" is the better structure because there is no formal charge on any of the atoms. | |
| (b) | "A" is the better structure because all the bonds and non-bonding electron pairs are arranged in a symmetrical pattern. | |
| (c) | "B" is the better structure because there are opposite formal charges on the two oxygen atoms which attract each other and give the molecule a lower energy. | |
| (d) | "B" is the better structure because the bond energies of a single bond and a triple bond are higher than the bond energies of two double bonds. | |
| 12. Which of the following gases would be most soluble in water? | ||
| (a) | N2 | |
| (b) | NH3 | |
| (c) | CH4 | |
| (d) | CO2 | |
| 13. Which of the following compounds should have the highest boiling point? | ||
| (a) | NH3 | |
| (b) | CH4 | |
| (c) | H2O | |
| (d) | HF | |
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Copyright @ August 2000 by Richard C. Banks...all rights reserved.
