Nickel has E° = -0.25 V and gold has E° = +1.50 V, for…

ChemistryEasyHigh School (11–12)Redox Reactions

Nickel has $E^\circ = -0.25\ \text{V}$ and gold has $E^\circ = +1.50\ \text{V}$ , for $\text{M}^{n+}/\text{M}$ . Which metal releases hydrogen from dilute hydrochloric acid?

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← The couple Al³⁺/Al has E° = -1.66 V. A student writes the oxidation of aluminium as 2Al → 2Al³⁺ + 6e⁻. What E° belongs to this equation?A hydrogen and oxygen fuel cell runs the reaction 2H₂ + O₂ → 2H₂O, which transfers 4 mol of electrons, with E° = 1.23 V. What is Δ G° for the reaction as written? →

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