The reduction potential of hydrogen electrode at pH=7 will be (1) 0 V (2) -0.414 V (3) + 0.414 V (4) 0.72 V

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How much will be the reduction potential of a hydrogen Electrode change when its solution initially at pH = 0 Is neutralized to pH = 7?

E_{r e d u c t i o n}

p H = 0

298 K

1 a t m

Column I Column II

(A) Maximum potential for

H-electrode at $p H_{2} = 1 a t m$ (P)-0.414 V

(B) Minimum potential for

H-electrode at $p H_{2} = 1 a t m$ (Q) -0.018 V

up in 1 M KCl and $p H_{2} = 1 a t m$ (R) -0.827 V

(D)Potential of H-electrode set up

in 1.0 M HCl and $p H_{2} = 1 a t m$ (S) 0.0 V

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