Oxidation states, balancing redox equations, electrochemistry basics.
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Q1 · Redox Reactions · EASY
The oxidation number of sulphur in H₂SO₄ is:
Q2 · Redox Reactions · MEDIUM
In the reaction 2KMnO₄ + 16HCl → 2KCl + 2MnCl₂ + 5Cl₂ + 8H₂O, the oxidising agent is:
Q3 · Redox Reactions · EASY
In the reaction: Zn + Cu²⁺ → Zn²⁺ + Cu, which of the following statements is correct?
Q4 · Redox Reactions · MEDIUM
What is the oxidation number of chromium in K₂Cr₂O₇?
Q5 · Redox Reactions · HARD
When the following redox reaction is balanced in acidic medium using the ion-electron method, what is the coefficient of H⁺ in the balanced equation? MnO₄⁻ + Fe²⁺ → Mn²⁺ + Fe³⁺