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Construct galvanic cells from the follow...

Construct galvanic cells from the following pairs of half cells and calculate their emf.
`underset(1 atm) ((Pt)) H_2|HCl (1M) and underset(1 atm)Pt (Cl_2)|HCl (1M)`

Text Solution

Verified by Experts

`H_2|H^+||Cl_2|Cl^(-) , E=1.36V`
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Construct galvanic cells from the following pairs of half cells and calculate their emf at 25^@C Fe^(3+)(0.1M), Fe^(2+) (1M) (Pt) E_(Fe^(3+),Fe^(2+))=0.77 volt AgCl(s),Cl^- (0.001M) |Ag E_(AgCl,Cl^-)^@=0.22 volt

Knowledge Check

  • Cell voltages and half-cell potentials are often compeared under standard conditions called the standard state at a specified temperature (298K). The standard state requires all reagents to be pure with all gases at unit fugacity, all ions at unit activity and all electrical connections between half-cells to be made with platinum. Suppose following are half cell reaction, with respective emf (s) are -0.25 V and -0.3V. Cell reaction I underset("1 atm")(Pt(H_(2))|HCl) Cell reaction II underset("1 atm")(Pt(H_(2))|H_(2)SO_(4)) pH value of cell reaction I is

    A
    4.23
    B
    5.23
    C
    5.08
    D
    5.32

  • Cell voltages and half-cell potentials are often compeared under standard conditions called the standard state at a specified temperature (298K). The standard state requires all reagents to be pure with all gases at unit fugacity, all ions at unit activity and all electrical connections between half-cells to be made with platinum. Suppose following are half cell reaction, with respective emf (s) are -0.25 V and -0.3V. Cell reaction I underset("1 atm")(Pt(H_(2))|HCl) Cell reaction II underset("1 atm")(Pt(H_(2))|H_(2)SO_(4)) pH value of cell reaction Il is

    A
    4.23
    B
    5.23
    C
    5.08
    D
    5.32

  • The emf of given cell Pt - underset(P_(1))(H_(2))|H^(+)|underset(P_(2))(H_(2) - Pt is :

    A
    `(RT)/(F)log'(P_(1))/(P_(2))`
    B
    `(RT)/(2F)log_(e)(P_(1))/(P_(2))`
    C
    `(RT)/(F)log _(e)(P_(2))/(P_(1))`
    D
    None of these

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