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The reduction potential of hydrogen half...

The reduction potential of hydrogen half cell will be negative if :

A

`P_(H_(2))=1 "atm" and [H^(+)]=1.0 M`

B

`P_(H_(2))=2 "atm" and [H^(+)]=2.0 M`

C

`P_(H_(2))=2 "atm" and [H^(+)]=1.0 M`

D

`P_(H_(2))=1 "atm" and [H^(+)]=2.0 M`

Text Solution

Verified by Experts

The correct Answer is:
C
`2H^(+)+2e^(-) to H_2`
`therefore RP=0.0-(0.059)/2 "log" (P_(H_2))/([H^+]^2)`
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Knowledge Check

  • The electrode potential of oxidation half cell

    A
    a. is independent of the concentration of ions in the cell
    B
    b. decrease with deccreased concentration of ions is the cell
    C
    c. decreases with increased concentration of ions in the cell
    D
    d. none of these.

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