IB Chemistry HL 3.2.12 Standard electrode potential (E⦵) Question Bank

Practise IB Chemistry HL 3.2.12 by applying standard electrode potential (e⦵) to exam-style questions.

Exam points

identify the relevant chemical structure, process or evidence
apply the correct chemical model or equation
evaluate the result using chemical reasoning and data

[Maximum number: 2]

Magnesium is a group 2 metal which exists as a number of isotopes and forms many compounds.

Standard electrode potentials are measured relative to the standard hydrogen electrode. Describe a standard hydrogen electrode.

Any two of:

«inert» Pt electrode

OR

platinum black conductor

$1 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{H}^{+}(\mathrm{aq})$ $\mathrm{H}_{2}(\mathrm{~g})$ at 100 kPa

Marking guidance:

Accept 1 atm $\mathrm{H}_{2}$ (g).

Accept 1 bar $\mathrm{H}_{2}$ (g)

Accept a labelled diagram.

Ignore temperature if it is specified.

2 max

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3.2.12 (HL)—Standard electrode potential (E⦵) question 1