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8 Cards in this Set
- Front
- Back
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What is rusting of iron |
Redox reaction |
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When does resting happen |
When iron is in contact with both oxygen and water |
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What are the different ways to prevent rusting |
Painting oiling or greasing sacrificial protection which is placing a more reactive metal E.g. galvanising which is where code of zinc is put on an iron object Electroplating |
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What is electroplating |
Coating the surface of a metal with another metal using electrolysis |
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How do you electroplate something |
The cathode is the object you want to electroplate the anode is the power of metal using for the plating electrolyte is a solution containing metal ions of the metal that your plating |
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What is titrations |
Titrations allow you to find out exactly how much acid is needed to neutralise a given quantity of alkali |
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What is the method of titrations |
Use a pipette measure out a set volume of alkali into a flask and add a few drops of indicator usually Phenolphthalein or methyl orange Fill burette with known concentration of acid Use burette to add the acid to the alkali a bit at a time swirl the flask regularly go slowly when you think the alkalis almost neutralised The indicator will change colour when the alkalis be neutralised in Phenolphthalein is pink in acids and in alkalis colourless methyl and orange it is yellow and Will go red in acid’s Record volume of acid used to neutralise the alkali |
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What is the equation for concentration in titration calculations |
Number of moles divided by volume of solution |
