Question

oxidation potential of hydrogen electrode at 1 atm pressure H2 gas dipped in 0.001 M HCL solution at 25°C will be​

Answer 1

we have to find the oxidation potential of hydrogen electrode at 1 atm pressure H₂ gas dipped in 0.001 M HCl solution at 25° C

solution : here, HCl  ⇄ H⁺  +  Cl⁻

so the concentration of hydrogen ions = [ H⁺ ] = 0.001 M

and then at hydrogen electrode,

  H⁺ + e⁻ ⇄ 1/2 H₂

now from Nernst equation,

       reduction potential of H₂ = E₀  - 0.0591/n log 1/[H⁺]

                                                 = 0 - 0.0591/1 log1/(10⁻³)

                                                = - 0.0591 × 3 = -0.1773 V

we know, oxidation potential = - reduction potential = +0.1773 volts

therefore the oxidation potential of hydrogen gas will be +0.1773 volts.

Answer 2

Answer:

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