(Zn/HgO).
(Zn/HgO).
(Zn/HgO).
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La pile bouton à anode de zinc.<br />
50<br />
Piles bouton.<br />
Pile Réaction cathodique<br />
<strong>Zn</strong> – Ag 2O Ag 2O + H 2O + 2e - 2 Ag + 2 OH<br />
<strong>Zn</strong> - <strong>HgO</strong> <strong>HgO</strong> + H 2O + 2e - Hg + 2 OH<br />
<strong>Zn</strong> - O 2 ½ O 2 + H 2O + 2e- 2 OH<br />
Réaction anodique commune: <strong>Zn</strong> + 4 OH - → <strong>Zn</strong>(OH) 4 2- + 2 e -
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