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The standard Hydrogen electrode potentia...

The standard Hydrogen electrode potential is zero, because

A

It has been measured accurately.

B

it has been defined that way.

C

there Is no potential difference between electrode and solution.

D

none of these

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The standard electrode potentials of some electrodes are given below: E_(Zn^(2+),Zn)^0= -0.76V E_(Cu^(2+)^0, Cu)=+0.34V E_(Ag^+,Ag)^0=+0.80V E_(H^+,H)^0=0V What Is the reaction taking place at SHE when it Is connected to Ag//Ag^+ electrode to form a galvanic cell?

The standard electrode potentials of some electrodes are given below: E_(Zn^(2+),Zn)^0= -0.76V E_(Cu^(2+)^0, Cu)=+0.34V E_(Ag^+,Ag)^0=+0.80V E_(H^+,H)/^0=0V .find the value of K_c (equillibrium constant) in the daniel cell at 298k.

Knowledge Check

  • A standard hydrogen electrode has zero electrode potential because

    A
    hydrogen is easiest to oxidise
    B
    this electrode potential is assumed to be zero
    C
    hydrogen atom has only one electron
    D
    hydrogen is the lightest element

  • The standard electrode potentials of Zn and Ni respectively are -0.76 V and -0.25 V. Then the standard emf of the spontaneous cell by coupling these under standard conditions is

    A
    `+1.01 V`
    B
    `-0.51 V`
    C
    `+0.51 V`
    D
    `+0.25 V`

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