Using transition metal ions as catalysts
In the reaction between peroxodisulphate ions and iodide ions, the iodide ions are oxidised to iodine whilst the peroxodisulphate ions
Tag: electrode potential
Explaining the redox behaviour of transition metals
Much of the chemistry of transition metal ions is a consequence of the fact that the 3d and 4s orbitals
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Electrochemistry exam question booklet
This is not just another set of exam questions with exam board style mark schemes. You can find plenty of
Using the Nernst equation to calculate the electrode potential of a half cell
The standard electrode potential for a half cell means exactly that – everything happening under standard conditions (298K, 100 kPa,
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The chemistry of fuel cells
Fuel cells commonly use the reaction between hydrogen and oxygen to produce a voltage, with water being the only waste
The chemistry of batteries
Modern storage cells (batteries) can be divided into the non-rechargeable kind (primary cells) and the rechargeable kind (secondary cells). Primary
Understanding the relationship between the potential difference for an electrochemical cell and Gibbs energy
The spontaneity or feasibility of a reaction can be described by both a positive Ecell⦵ value or a negative value
The chemistry of corrosion
The rusting of iron can be summarised by the equation 4 Fe(s) + 3 O2(g) + H2O(l) ⇾ 2 Fe2O3•xH2O(s)
Predicting the feasibility of redox reactions using standard electrode potentials
A redox reaction consists of two half reactions – an oxidation and a reduction reaction. If we take a pair
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Determining the potential difference of an electrochemical cell
We can link any two half cells together to form an electrochemical cell. A high resistance voltmeter prevents current (electrons)
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