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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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

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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