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Description
How the distinct colouring of ions and compounds of the transition elements can be used to determine their existence in different oxidation states.
How the distinct colouring of ions and compounds of the transition elements can be used to determine their existence in different oxidation states.
| Module code and title: | S304, The nature of chemistry |
|---|---|
| Item code: | S304; 13 |
| First transmission date: | 1978 |
| Published: | 1978 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:24:00 |
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| Producer: | Barrie Whatley |
| Contributor: | David Johnson |
| Publisher: | BBC Open University |
| Keyword(s): | Chemistry laboratories; Chemical compounds; Ions; Iron; Manganese; Nottingham University; Oxidation states; Transition metals |
| Footage description: | Footage - Sodium metavanadate. Sodium metaphosphate. Sodium metavanadate dissolved in dilute acid and reduced (0'20"-2'05") - Chart of oxidation states of the first ion transition elements in simple compounds (2'21"-3'43") - Chromic salt dissolved in dilute acid and oxidised with sodium bismuthate. Solution of chromium 6 (3'44"-4'51") - Oxidation states of chromium (4'52"-5'12") - Manganase sulphate oxidised by sodium bismuthate. Manganese is oxidation state 7 (5'13"-5'54") - Solution of ferric salt with sodium bismuthate added. Heating ferric hydroxide in solution of sodium hydroxide oxidised with sodium hypochlorite. Chart of oxidation states (6'25"-8'49") - Oxidation of copper 2 & nickel 2 (9'09"-11'36") - Chart of oxidation states (11'45"-12'05") - Copper 3 oxidising water (13'03"-13'35") - Bottles of chromium, manganese, iron & cobalt (14'35"-14'54") - Chromium 3 oxidised to chromium 2 then back to chromium 3 (14'55"-16'07"). Electrolytic oxidation of Co2+. Oxidation of Fe2+ & Mn2+ (16'39"-18'50") - Acid sloution of ferric salt added to aqueous Mn2+ and no reaction. Electrolytic oxidation of Mn3+ and oxidation of Fe2 to Fe3 (19'35"-21'00") - Standard Gibbs function change. Graph of values of Gibbs function for the metals of the 1st transition series (21'32"-22'16") - Third ionisation energy of the metals (22'25"-23'21"). |
| Master spool number: | 6HT/71978 |
| Production number: | 00525_1203 |
| Videofinder number: | 868 |
| Available to public: | no |
