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Electrochemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryElectrochemistry1 Mark
Question
What is the overall electrochemical reaction taking place in rusting?
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Answer

$2\text{Fe(s) + O}_2(\text{g})+4\text{H}^+(\text{aq})\xrightarrow{ \ \ \ \ \ \ }2\text{Fe}^{2+}(\text{aq})+2\text{H}_2\text{O}(\text{I})$

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