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Zinc has a negative reduction potential (Eo = -0.76V) so it is favorable for zinc to be oxidized (the opposite of being reduced) under standard conditions: Zn --> Zn2+ + 2 e- Eo = +0.76V In sulfuric acid you primarily have three species present (not including the water): H+, HSO4-, and SO42-. Of these three, H+ has the highest reduction potential: 2 H+ + 2 e- --> H2 Eo = 0.00V So in the presence of H+ ions from sulfuric acid, zinc will oxide to form Zn2+: 2 H+ + Zn --> H2 + Zn2+ Eo = 0.00V + 0.76V = 0.76 V

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15y ago
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11y ago

if you were adding zinc metal to sulphuric acid, how would you know when all the acid had all reacted?

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Q: How would you know all the acid has reacted when adding zinc to sulfuric acid?
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