AlkylHalidesProcNotesfall04

AlkylHalidesProcNotesfall04 - Procedure Sn2 Reactivity NaI...

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Reactivities of Alkyl Halides Procedure Notes Alkyl Halides Examined 1.) 2-chlorobutane 5.) 2-chloro-2-methylpropane 2.) 2-bromobutane 6.) bromobenzene 3.) 1-chlorobutane 7.) bromocyclohexane 4.) 1-bromobutane 8.) bromocyclopentane Conditions Examined Reaction with NaI in acetone at room temperature and with heat Reaction with AgNO 3 in ethanol at room temperature and with heat Construct an 8 x 4 cell table. Make sure that you leave enough room in each cell for observations. During the course of the reactions, you will be noting the time at which a reaction occurs (i.e. precipitate forms - the solution appears cloudy), and if you had to heat it to get a reaction to occur. From this info, you will evaluate your results. We will be omitting crotyl chloride and benzyl chloride from the testing. We will also double the concentration of the reacting halides by using half the solvent volume stated in the lab text. This will give more accurate results overall for both parts of the experiment.
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Unformatted text preview: Procedure Sn2 Reactivity- NaI in Acetone Place 1 mL of NaI in acetone in each of 8 labeled test tubes. Add 4 drops of the appropriate halide. Mix thoroughly. Record the time of mixing. Watch for cloudiness or ppt, while you continue to add the next halide. Record the time of reaction for each halide. For those that don’t react, place the tubes in a hot water (50 degree) bath, heat for 1 minute, look for cloudiness or ppt, and note any reactions. Sn1 Reactivity- Ethanolic AgNO 3 Place 1 mL of 1% AgNO 3 in each of 8 labeled test tubes Add 4 drops of halide, mix, record the time of mixing. Watch for cloudiness or ppt, while you continue to add the next halide. Record the time of reaction for each halide. Place the tubes for those that don’t react in a hot water (100 degree) bath, heat for 1 minute, look for cloudiness or ppt, and note any reactions....
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