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labexamCHEM 2230 LB - CHEM 2230 LB Organic Chemistry 1...

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CHEM 2230 LB Organic Chemistry 1 Laboratory Sample Final Exam Xavier University of Louisiana Note: This sample final exam covers the same experiments that were covered in the fall 1997 semester of Organic Chemistry 1 Lab, but these questions do not necessarily have the same format or cover exactly the same material as the questions on the actual current final. Note: Due to limitations of the html format, numbers in formulas are given in plain text when they should be subscripts or superscripts (example: H2O). Please do not do this on quizzes. 1. A. compound that causes tumors is called a ... a. mutagen. b. carcinogen. c. teratogen. d. lachrymator. 2. If some acid gets into your eyes, which of the following should you NOT do ? 3. The melting point of potassium bromide is higher than the melting point of naphthalene because... 4. If all other factors stay the same, when the size of a molecule increases, the melting point ... 5. If a sample of benzoic acid (m.p. 121-122 degrees C) has become contaminated with a small amount of urea (m.p. 133-134 degrees C), a soluble impurity, its melting point range would be expected to be ... a. raised and narrowed. b. lowered and narrowed. c. raised and broadened. d. lowered and broadened. 6. Suction filtration involves ...
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7. A student weighed 2.3 g of impure solid and recrystallized it. The mass of the purified crystals was 0.41 g. The percent recovery was ... a. 42 %. b. 18 %. c. 12 %. d. 5.5%. 8. Which of the following is not a desirable property for a recrystallization solvent ? 9. Norit (activated charcoal) is used in a recrystallization process for ...
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