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Physical Chemistry (PI1.1 Redox and standard electrode potential)

Quick questions on Redox and Standard Electrode Potential (PI1.1) - Eduqas A-Level Chemistry

4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is feasible but slow?
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A positive EMF means the reaction can happen, not that it does so quickly; kinetic factors can make a feasible reaction immeasurably slow.
What are non-standard conditions?
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Changing concentration shifts the electrode potential (by Le Chatelier on the half-equation), so predictions from standard values may fail when conditions are far from standard.
What is q1?
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Define the standard electrode potential of a half-cell. [2 marks]
What is q2?
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Using Mg2+/Mg\text{Mg}^{2+}/\text{Mg} (2.37 V-2.37\ \text{V}) and Zn2+/Zn\text{Zn}^{2+}/\text{Zn} (0.76 V-0.76\ \text{V}), calculate the EMF of a cell made from these half-cells. [1 mark]

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