Discussion
Following the result, when increase concentration of Fe3+ by added volume of Fe3+,current will be increase because high concentration of Fe3+ it have more electron then generated large amount of current.In part 2 changing scan rate(voltage),the result shown that when increase scan rate current will be increase,it can describe by ohm’s law(V=IR)- current is direct variation with voltage.
For the procedure, we use electrochemical instrument to measure the current by applied voltage to working electrode that react with analyte.We used 3 electrodes : auxiliary electrode, reference electrode, and working electrode. We polish working electrode with alumina(wet) for prevent interference and have more efficiency to generated current.
Discussion Following the result, when increase concentration of Fe3+ by added volume of Fe3+,current will be increase because high concentration of Fe3+ it have more electron then generated large amount of current.In part 2 changing scan rate(voltage),the result shown that when increase scan rate current will be increase,it can describe by ohm’s law(V=IR)- current is direct variation with voltage. For the procedure, we use electrochemical instrument to measure the current by applied voltage to working electrode that react with analyte.We used 3 electrodes : auxiliary electrode, reference electrode, and working electrode. We polish working electrode with alumina(wet) for prevent interference and have more efficiency to generated current.
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