bq1_j03 - UC Extension Org/BioChem X402 Test #1, 6/23/03....

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Name: (Please print) Total points: 21 [Plus bonus problems, 6 pts.] ARE YOU REGISTERED? _______ Have you signed up for the class e-mail list: ____ General Closed book. You may use one page of notes. Otherwise, no books, periodic table, models, etc. If a question isn’t clear, please ask me about it. Some questions request a simple answer and an explanation. It’s the explanation that is important. No credit for answer without a requested explanation. In naming compounds, IUPAC names are preferred, but valid common names will be accepted. (A name will be graded based on the compound you show.) 8 . (2 pts., 1 pt. per part) Name the following compounds, following the official (IUPAC) rules. Please show the numbering of the main chain in each case. a. Cl Cl \/ CH 3 CH 2 CHCH 2 CH 2 CCH 3 CH 2 CH 2 CH 3 b. Br - /\/\ = 8 . (1 pt.; no credit without explanation) Petroleum refining produces a wide range of hydrocarbons. Among them are ethane and ethene (ethylene). Which (one) of these two hydrocarbons is more useful as a starting material for making a variety of chemicals in the lab? Why , in terms of the properties of these chemicals? (Ignore possible issues such as the amount of the chemicals, or the ease of purifying them from the refining mixture.) 8 . (1 pt.; no credit without explanation) Which of the following two chemicals is likely to have the higher boiling point ? Why , based on the structure of the molecule? n-pentane and 2-methylbutane (isopentane)
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bq1_j03 - UC Extension Org/BioChem X402 Test #1, 6/23/03....

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