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For a redox reaction, if the standard reduction potentials are E°(A/B) = 0.80 V

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Question: For a redox reaction, if the standard reduction potentials are E°(A/B) = 0.80 V and E°(C/D) = 0.40 V, which species is the stronger oxidizing agent?

Options:

  1. A
  2. B
  3. C
  4. D

Correct Answer: A

Solution: 

The stronger oxidizing agent is the one with the higher reduction potential. Here, A/B has a higher E° than C/D.

For a redox reaction, if the standard reduction potentials are E°(A/B) = 0.80 V

Practice Questions

Q1
For a redox reaction, if the standard reduction potentials are E°(A/B) = 0.80 V and E°(C/D) = 0.40 V, which species is the stronger oxidizing agent?
  1. A
  2. B
  3. C
  4. D

Questions & Step-by-Step Solutions

For a redox reaction, if the standard reduction potentials are E°(A/B) = 0.80 V and E°(C/D) = 0.40 V, which species is the stronger oxidizing agent?
  • Step 1: Understand what a redox reaction is. It involves the transfer of electrons between two species.
  • Step 2: Know that in a redox reaction, the species that gains electrons is called the oxidizing agent.
  • Step 3: Look at the standard reduction potentials given: E°(A/B) = 0.80 V and E°(C/D) = 0.40 V.
  • Step 4: Compare the two standard reduction potentials. A/B has a higher value (0.80 V) than C/D (0.40 V).
  • Step 5: Conclude that the species with the higher reduction potential (A/B) is the stronger oxidizing agent.
  • Standard Reduction Potentials – The standard reduction potential (E°) indicates the tendency of a species to gain electrons and be reduced; higher values correspond to stronger oxidizing agents.
  • Redox Reactions – Redox reactions involve the transfer of electrons between species, where oxidation refers to loss of electrons and reduction refers to gain of electrons.
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