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Description
A method of calculating equilibrium constants by statistical mechanics is examined. The programme then compares expected findings using equilibrium constants determined by thermodynamic data with ...practical findings.
A method of calculating equilibrium constants by statistical mechanics is examined. The programme then compares expected findings using equilibrium constants determined by thermodynamic data with ...practical findings.
| Module code and title: | ST294, Principles of chemical processes |
|---|---|
| Item code: | ST294; 10 |
| First transmission date: | 24-06-1975 |
| Published: | 1975 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:23:59 |
| + Show more... | |
| Producer: | Barrie Whatley |
| Contributors: | Keith Bolton; Charles Harding |
| Publisher: | BBC Open University |
| Keyword(s): | 1,2-dichloroethane; Data; Fundamental molecular properties; Reaction conditions; Reaction equilibrium; Thermodynamic quantities; Vinyl chloride |
| Footage description: | Keith Bolton introduces the programme. Bolton explains how it is possible to calculate values for the equilibrium constant from molecular properties through the application of statistical mechanics. Using several graphic aids, he begins by examining a method for working out the total energy of a chemical system. Bolton then works out the energy distribution for three packets of energy. He builds up an energy level diagram. Charlie Harding discusses the way in which equilibrium constant varies with temperature in the reaction Chlorine + Ethylene - dichloroethane. He uses a large graph as visual aid. Harding performs an experiment, burning natural gas, to demonstrate the importance of temperature in a reaction. Harding uses large graphs to look at equilibrium constants and temperature of two further reactions. 1. decomposition of 1,2 dichloroethane; 2. ethane. Charlie Harding performs an experiment on the decomposition of 1,2 dichloroethane at the temperature predicted by thermodynamics. No reaction occurs. Harding then raises the temperature of the experiment. This time a reaction does occur. Harding asks students to design their own experiments to examine the effect of pressure and temperature on the reaction. He gives several hints to the students on how to proceed. |
| Master spool number: | 6HT/71512 |
| Production number: | 00525_1162 |
| Videofinder number: | 750 |
| Available to public: | no |
