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11 questions from this quiz
Oxidation or reduction processes
Reduction
Oxidation
They gain electrons
They lose electrons
Al3++3e−→AlAl^{3+} + 3e^- \to AlAl3++3e−→Al
2O2−→O2+4e−2O^{2-} \to O_2 + 4e^-2O2−→O2+4e−
Three electrons
Four electrons
To verify correct equation
Aluminium extraction
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