All Redox chemistry articles – Page 4
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ResourceChemistry Vignettes: Electrochemistry
A series of short screencast videos to introduce electrochemistry
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Experiment
Oxidation of ethanol
In this class practical, ethanol is oxidised by acidified sodium dichromate to form ethanal and then ethanoic acid. Includes kit list and safety instructions.
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Experiment
Extracting copper from copper(II) carbonate
Use this practical to produce copper from copper(II) carbonate, modelling the extraction of copper from malachite. Includes kit list and safety instructions.
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Experiment
Catalysing the reaction of sodium thiosulfate and hydrogen peroxide
Illustrate the effect of a catalyst as sodium thiosulfate is oxidised by hydrogen peroxide in this demonstration. Includes kit list and safety instructions.
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Experiment
A chromate–dichromate equilibrium
Try this class practical to investigate an equilibrium between chromate(VI), dichromate(VI) and hydrogen ions. Includes kit list and safety instructions.
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Experiment
Estimating the concentration of bleach
Compare the chlorine content and concentration of sodium hypochlorite in different bleaches in this class practical. Includes kit list and safety instructions.
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Experiment
Reactions of chlorine, bromine and iodine with aluminium
Try this demonstration to produce some spectacular exothermic redox reactions by reacting aluminium with halogens. Includes kit list and safety instructions.
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Experiment
Making a photographic print using silver chloride
Try this practical or demonstration to create a photographic image of an object using light sensitive silver chloride. Includes kit list and safety instructions.
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Experiment
Halogens in aqueous solution and their displacement reactions
Explore the chemical properties of halogens using this demonstration or class experiment. Includes kit list and safety instructions.
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Experiment
Ammonium dichromate volcano
Try this demonstration to create a mini volcanic eruption illustrating the decomposition of ammonium dichromate. Includes kit list and safety instructions.
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Experiment
Finding the formula of copper(II) oxide
Use this class practical with your students to deduce the formula of copper(II) oxide from its reduction by methane. Includes kit list and safety instructions.
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Experiment
Catalysis of a sodium thiosulfate and iron(III) nitrate reaction
Investigate the effect of transition metal catalysts on the reaction between iron(III) nitrate and sodium thiosulfate. Includes kit list and safety instructions.
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Experiment
Sulfuric acid as a dehydrating agent
Try these two demonstrations to illustrate the difference between dehydration and drying using sulfuric acid. Includes kit list and safety instructions.
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Experiment
The ‘Old Nassau’ or Halloween clock reaction
Illustrate dramatic colour changes as a result of redox and precipitation reactions in this vivid demonstration. Includes kit list and safety instructions.
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Experiment
Preventing rust
Try this practical to test methods for preventing rust on iron nails, including painting, greasing and sacrificial protection. Includes kit list and safety instructions.
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Experiment
The composition and formula of water
Try this demonstration to determine the formula of water through the reaction of copper(II) oxide with hydrogen. Includes kit list and safety instructions.
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Experiment
The ‘breathalyser’ reaction
Try this demonstration to recreate an early ‘breathalyser’ test, passing ethanol vapour through potassium dichromate. Includes kit list and safety instructions.
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Experiment
A red–blue oscillating reaction
Use this practical or demonstration to provide a visual illustration of an oscillating reaction and redox equilibria. Includes kit list and safety instructions.
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Resource
Problem based practical activities
A collection of 10 practical activities where students apply their understanding of a concept to devise a solution to a ‘real-life’ scenario.
