CAIE A-Level Chemistry 24.2.1 Terms

Practise defining standard electrode and cell potentials with the correct comparison, voltage meaning and standard conditions.

Exam points

define E° as the voltage of a half-cell compared with the standard hydrogen electrode
state standard conditions: 1 mol dm^-3, 298 K and 1 atm or 101 kPa where relevant
distinguish E°cell as the potential difference between two half-cells

[Maximum number: 2]

Define the term standard cell potential.

the potential difference between two half-cells/two electrodes (in a cell)

under standard conditions of $1 \mathrm{~atm} ., 298 \mathrm{~K}$ , (all) solutions being $1 \mathrm{~mol} \mathrm{dm}^{-3}$

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24.2.1—Terms question 1