oxidation is the loss of electrons reduction is the gain of electrons Balance the half equation for the formation of aluminium during electrolysis: Al 3+ + e-→ Al. The balanced half equation is: ...

In this reaction, carbon is oxidised because it gains oxygen. At the same time, copper oxide is reduced because oxygen is removed from it.

IN a recent paper, D. E. Green 1 published values of the potentials of the systems hypoxanthine &rlharr; uric acid, xanthine &rlharr; uric acid, which I had already determined 2.

THE activation of copper by repeated oxidation and reduction is ascribed by previous authors to an increase in surface area 1, and our experiments have confirmed this conclusion. In the activated ...