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Q: The reduction potential of hydrogen half-cell will be negative if :(1) PH2= 2 atm and [H+] = 2.0 M(2) PH2= 1 atm and [H+] = 2.0 M(3) PH2= 1 atm and [H+] = 1.0 M(4) PH2= 2 atm and [H+] = 1.0 M

  • 1
    Option 1
  • 2
    Option 2
  • 3
    Option 3
  • 4
    Option 4
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Answer : 4. "Option 4"
Explanation :

Answer: D) Option 4 Explanation:  H+-e-→12H2    Apply Nernst equation     E=0-0.0591logPH212H+      E=-0.0591log2121     Therefore E is Negative

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