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Chris Garton

on 7 November 2010

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Transcript of Electrolysis

This is about Electrolysis Pronounced e-lec-tro-li-sis Grammar is important Yes it is. <>< fish Electrolysis literally means; broken down by electricity.
another fish <>{ It also means 'The conduction of electricity through an aqueous substance'. <>< That was electrolysis. Here it is again. ><>There are 2 electrodes; the anode and the cathode.<>< The cathode is negative and the positive cations are attracted to it. The anode is positive and attracts the negative anions. Electrolysis is generally used to purify metals more
reactive than carbon, or just for fun. When the positive ions go to the cathode, they
gain electrons; this is called reduction. RIG When negative ions go to the anode, they lose electrons; this is called oxidation. OIL <>{ OILRIG Oxidation
Gain Reactions of ions at the electrodes can be represented by half equations. Pour exemple; 2Cl- Cl +2e- 2 Por ejemplo; Copper is purified by electrolysis.
By putting impure copper at the positive electrode (anode) And pure copper at the negative electrode (cathode) In a solution containing copper ions. zum beispiel; The electrolysism :) of sodium chloride produces hydrogen and chlorine. <>< <>< <>< As well as sodium hydroxide; an important reagent in the chemical industry. <>< We are nearly finished now. Fish<><, out of interest <>< are aquatic and electrolysis is aqueous; do you see the link? No? Neither do we. Thank you for watching our presentation. <>< ddiolch 'ch go raibh maith agat And we love science. Have you?
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