What is the standard reduction potential for the half-reaction H2 → 2H+ + 2e-?

Practice Questions

Q1
What is the standard reduction potential for the half-reaction H2 → 2H+ + 2e-?
  1. 0.00 V
  2. 0.76 V
  3. 1.23 V
  4. 2.00 V

Questions & Step-by-Step Solutions

What is the standard reduction potential for the half-reaction H2 → 2H+ + 2e-?
  • Step 1: Understand that the half-reaction H2 → 2H+ + 2e- represents the process of hydrogen gas (H2) losing electrons.
  • Step 2: Recognize that this half-reaction is a reduction process, where H2 is being converted into protons (H+).
  • Step 3: Know that standard reduction potentials are measured against a standard reference, which is the hydrogen electrode.
  • Step 4: Remember that the standard reduction potential for the hydrogen electrode (H2 → 2H+ + 2e-) is defined as 0.00 V.
  • Step 5: Conclude that the standard reduction potential for the half-reaction H2 → 2H+ + 2e- is therefore 0.00 V.
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