2311quiz2 2008 - Chemistry 2311, Fall 2008 Student Name...

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Chemistry 2311, Fall 2008 1 Student Name _____Key_________________________ Last Name of TA _______________ Quiz #2 (75 pts) Multiple Choice Questions: Circle ONE correct answer. 1. Grignard Reaction – Anhydrous conditions were required for the Grignard Reaction because: 5 pts a. water reacts with bromobenzene b. a Grignard reagent is a strong electrophile and acid c. magnesium reacts violently with water d. a Grignard reagent is a strong nucleophile and base 2. Crystallization – Characteristics of a good recrystallization solvent for a particular compound are: 5 pts a. maximum solubility hot and minimum solubility cold b. a boiling point higher than the compound’s melting point c. a solvent pair that are immiscible and can be separated by extraction d. reacts selectively with the compound 3. Distillation – The type of distillation most likely applicable for separating a mixture of pentane (36 o C) and hexane (69 o C) is: 5 pts a. simple b. fractional c. vacuum d. steam 4. Distillation – The type of distillation most likely applicable for distilling a fragrant and volatile essential oil of boiling point 290 o C from its natural plant source is: 5 pts a. simple b. fractional c. vacuum d. steam 5. Gas Chromatography – In gas chromatography, the stationary phase consists of: 5 pts a. a solid silica gel packing b. an inert gas c. a high boiling liquid polymer
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This note was uploaded on 02/20/2010 for the course CHEM 2311 taught by Professor Wissinger during the Spring '10 term at University of Minnesota Duluth.

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2311quiz2 2008 - Chemistry 2311, Fall 2008 Student Name...

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