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Redox and electrochemistry — Question 52

Original QCE Vault practice · 4 marks

Q52 · Practice questionComplex familiar4 marks

QUESTION 52 (4 marks)

The following standard reduction potentials are provided: Mg2+/Mg=−2.37 V, Zn2+/Zn=−0.76 V, Cu2+/Cu=+0.34 V.

a) Rank the metal ions from strongest to weakest oxidising agent. [1 marks]

b) Determine whether zinc metal can spontaneously reduce magnesium ions under standard conditions. Justify with a calculated cell potential. [2 marks]

c) Explain why a non-standard measured cell potential need not equal a value calculated from these data. [1 marks]

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