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: redox
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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Explaining the chemistry of the Group 7
Group 7 consists of the elements fluorine, chorine, bromine, iodine and astatine, and they are known as the halogens. All
Electrochemistry exam question booklet
This is not just another set of exam questions with exam board style mark schemes. You can find plenty of
Electrolysis of solutions
We came across electrolysis of molten metal salts and of solutions at GCSE, and the good news is, nothing has
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
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)
Continue readingDetermining the potential difference of an electrochemical cell