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Questions and Answers
Which of the following reactions is not feasible based on the given E° values?
Which of the following reactions is not feasible based on the given E° values?
- H+ oxidising Cu to Cu2+
- Cr2O72-/H+ oxidising Cl– to Cl2
- H+ oxidising Fe to Fe2+ (correct)
- MnO4-/H+ oxidising Cl– to Cl2
Which of the following species is most likely to be reduced?
Which of the following species is most likely to be reduced?
- Cu(s)
- Fe2+(aq) (correct)
- Cl¯(aq)
- H+(aq)
In the reaction MnO4-/H+ oxidising Cl– to Cl2, what is the role of MnO4-?
In the reaction MnO4-/H+ oxidising Cl– to Cl2, what is the role of MnO4-?
- Oxidising agent (correct)
- Catalyst
- Reducing agent
- Spectator ion
Which of the following reactions is a redox reaction?
Which of the following reactions is a redox reaction?
Which of the following combinations will NOT lead to a spontaneous reaction?
Which of the following combinations will NOT lead to a spontaneous reaction?
What is the oxidising agent in the reaction Fe(s) + 2Br¯(l) → Br2(l) + Fe2+(aq)?
What is the oxidising agent in the reaction Fe(s) + 2Br¯(l) → Br2(l) + Fe2+(aq)?
Which of the following species undergoes reduction in the presence of H+?
Which of the following species undergoes reduction in the presence of H+?
What is the standard potential for the half-reaction: Cr2O72-(aq) + 14H+(aq) + 6e¯ ⇌ 2Cr3+(aq) + 7H2O(l)?
What is the standard potential for the half-reaction: Cr2O72-(aq) + 14H+(aq) + 6e¯ ⇌ 2Cr3+(aq) + 7H2O(l)?
Which of the following reactions involves an increase in oxidation number of an element?
Which of the following reactions involves an increase in oxidation number of an element?
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