The e-m-f of the cell Ni-Ni-21M-Cl-1MCl2-Pt is - E0Ni2-Ni-0-25ev-E01-2Cl2-Cl-1-36ev

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EMF

The e.m.f of ...

Question

The e.m.f of the cell
$N i / N i^{+ 2} (1 M) | | C l^{-} (1 M) C l_{2}, P t$ is :
$(E^{0} N i^{2 +} | N i = - 0.25 e v : E^{0} \frac{1}{2} C l_{2} | C l^{-} = + 1.36 e v)$

-1.11V

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1.11V

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-1.61V

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1.61V

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E^{0} (N i^{2 +} / N i) = - 0.25 v o l t, E^{0} (A u^{3 +} / A u) = 1.50 v o l t .

N i_{(s)} | N i_{(a q)}^{2 +} (1.0 M) | | A u_{(a q)}^{3 +} (1.0 M) | A u_{(s)}

Among $[N i (C O)_{4}]$ , $[N i (C N)_{4}]^{- 2}$ and $[N i (C l)_{4}]^{- 2}$ :

[P t (N H_{3}) C l (N O_{2})]

[C o (N H_{3})_{4} C l_{2}] C l

N i (C O)_{4}

C o = 27, N i = 28, P t = 78

The EMF of the cell : Ni(s) | Ni²⁺ (1.0M) || Au ³⁺(1.0M) | Au (s) is

[ given E^o_Ni²⁺_/Ni -0.25V; E° _Au³⁺_{/ Au} = +1.50V ]

N i {(C O)}_{4}

N i {(C N)}_{4}^{2 -}

{[N i {(C l)}_{4}]}^{2 -}

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