Organic Chemistry Quiz One

Quiz 1 Chapter 1: CHE2110 (Please combine Quizzes 1-3 onto a single scantron to be handed in prior to Test 1)

1. | What atom would have a formal charge in this structure? | A) | A | B) | B | C) | C | D) | D |

2. | Which one of the following is the strongest base? | A) | A | B) | B | C) | C | D) | D |

3. | Which statement correctly describes the structures of BH3 and NH3? | A) | Both are trigonal and planar. | B) | Both are pyramidal. | C) | BH3 is trigonal planar and NH3 is trigonal pyramidal. | D) | BH3 is trigonal pyramidal and NH3 is trigonal planar. |

4. | Which one of the following is the conjugate acid of ethanol? | A) | CH3CH2O– | B) | CH3CH2O+ | C) | CH3CH2OH2+ | D) | CH3CH2OH3+ |

5. | Which one of the following mechanistically depicts the protonation of methanol by hydrogen bromide? | A) | A | B) | B | C) | C | D) | D |

6. | Give the molecular formula of the compound shown below: | A) | C8H16O | B) | C9H18O | C) | C10H18O | D) | C10H20O |

7. | The most stable resonance contributor of this would be: | A) | A | B) | B | C) | C | D) | D |

8. | In which of the following compounds would you expect Cl to have a partial positive charge? | A) | HCl | B) | CCl4 | C) | NaCl | D) | HOCl |

9. | What is the chemical formula of the following carbon skeleton diagram? | A) | C8H14 | B) | C8H16 | C) | C8H18 | D) | C8H20 |

10. | Based on VSEPR theory, which of the following species has (have) a trigonal pyramidal geometry?I. CO32- II. NH3 III. CH3+ | A) | only I | B) | only II | C) | I and II | D) | II and III |

11. | The electron pair movement depicted below produces a second resonance form for the species. What is the formal charge on the nitrogen atom for this second resonance form? | A) | -2 | B) | -1 | C) | 0 | D) | +1 |

12. | What