Lab 4 - 1 Scott Wise February 26, 2007 Lab 4: Preparation...

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Scott Wise February 26, 2007 Lab 4: Preparation of an Alcohol by Reduction of a Ketone Objective: To reduce benzophenone to benzohydrol using sodium borohydride and recrystallize the product. Reactions: Procedure: Refer to Pages 40-42 of Chemistry 232 Laboratory Manual 1 1
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Physical Properties: Figure 1: Reagents and products table for reduction of benzophenone to benzohydrol using sodium borohydride Compound MW (g/mole) Amount Mole (mmol) Yield Physical and Safety Data Sodium borohydride 37.8515 0.11 g 3.0 reagent Contact with water liberates extremely flammable gases. Toxic if swallowed. Causes burns. Dispose in provided waste bottle. Benzophenone 182.222 1.09 g 6.0 reagent irritant to skin and eyes, hazardous if ingested or inhaled. Limiting reagent. Dispose in provided waste bottle. 2-propanol 60.0959 15 mL solvent solvent Highly flammable. Irritating to eyes. Vapours may cause drowsiness and dizziness. Hygroscopic . Dispose in provided waste bottle. hydrochloric acid 36.36 10 mL 3.0 catalyst d 1.10 g/mL. Highly toxic, corrosive. Dispose by neutralizing, and flushing down sink with running water. Hydrogen gas
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Lab 4 - 1 Scott Wise February 26, 2007 Lab 4: Preparation...

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