12 Questions
What is the oxidation state of iron in the Fe²+ ion?
2+
What is the colour of the solution containing MnO, ions?
Purple
What is the product of the oxidation of Fe²+ to Fe³+?
Fe³+
What is the reducing agent in the reaction between Fe³+ and I'?
I'
What is the oxidation product of iodide ions in the reaction with Fe³+?
I₂
What is the purpose of the redox reaction between iron(II) ions and manganate(VII) ions?
To perform a redox titration
What is the oxidation state of iron in the reaction 2Fe+(aq) + 21-(aq) → 2Fe²*(aq) + 1,(aq)?
Fe²⁺
What happens to the iron ion in the reaction 2Fe³⁺(aq) + 2I⁻(aq) → 2Fe²⁺(aq) + I₂(aq)?
It is reduced
What is the relationship between the E value and the equilibrium of a redox reaction?
A more positive E value indicates the equilibrium shifts to the right
What happens to the MnO in the reaction MnO₄⁻ + 8H⁺(aq) + 5e⁻ → Mn²⁺(aq) + 4H₂O(l) in acid conditions?
It is reduced
What is the direction of the reaction Fe³⁺(aq) + e⁻ → Fe²⁺(aq) based on the standard electrode potential?
The reaction shifts to the right
What is the relationship between the standard electrode potential and the direction of a redox reaction?
A more positive E value indicates the reaction shifts to the right
Assess your understanding of redox reactions, including the Fe²+/Fe3+ and Cr³/Cr₂0,² systems, and qualitative analysis of ions on a test-tube scale.
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