| Topic | Chapter-Section | Name of Videodisc Demonstration | Description |
|---|---|---|---|
| Mechanisms and Rates of Reaction | 4a | Light Initiated Bromination of Pentane | Bromine is added to 2 test tubes containing pentane. One tube is masked, and the other irradiated with light. The tube exposed to light looses bromine color and pH paper shows evolution of an acidic gas. |
| Structure of 3 monobrominated isomeric products are shown. | |||
| Mechanism of free radical bromination. | |||
| 4b | Bromination of Hexane Isomers | Relative rates of reaction of 2 hexane isomers with bromine in light | |
| Mechanism of free radical bromination | |||
| 4c | Bromination of Alkyl Benzenes | Bromine is added to benzene, toluene, ethyl benzene, and isopropyl benzene. Order of reactivity parallels the stability of the free radical intermediates. | |
| Correlate with 8c -Reaction of Bromine with Benzene, Phenol, and Toluene | |||
| 6c | Addition of Iodine to alpha -Pinene - Relief of Ring Strain | reaction of alpha -pinene (from turpentine) with iodine results in a highly exothermic reaction accompanied by a large purple cloud from sublimation of excess iodine | |
| formerly used to treat infected horses' hooves | |||
| 8b | Reaction of Bromine with Cyclohexane, Cyclohexene, and Benzene | Bromine reacts with the double bond of cyclohexene but not with alkanes or aromatic hydrocarbons. | |
| Addition reaction | |||
| 8c | Reaction of Bromine with Benzene, Phenol, and Toluene | Bromine reacts with phenol to produce bromophenol isomers and HBr. Benzene and Toluene do not react with bromine in the absence of a catalyst. | |
| equation | |||
| Correlate with 4c - Bromination of Alkyl Benzenes | |||
| 10f | Nucleophilic Substitution | SN1 and SN2 nucleophilic substitution reacts are modeled using a music stand to show inversion in SN2 and intermediate in SN1 reactions. | |
| Equations | |||
| 11b | Oxidation of Glycerine with Solid Potassium Permanganate | demonstrates effect of particle size on rate of reaction | |
| redox reaction | |||
| exothermic reaction |
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