$M|{M^ + }||{X^ - }|X,$ ${E^o}({M^ + }/M)$ $= 0.44\, V$ અને ${E^o}(X/{X^ - })$ $= 0.33\,V$ છે.આ આંકડા પરથી શું તારણ કાઢી શકાય?
$RHS$: reduction $X + {e^ - } \to {X^ - }$ …..$(i)$
$LHS$: Oxidation $M \to {M^ + } + {e^ - }$ …..$(ii)$
Add $(i)$ and $(ii)$ $M + X \to {M^ + } + {X^ - }$
The cell potential = $ - 0.11\,V$
Since ${E_{cell}} = -ve$, the cell reaction derived above is not spontaneous. In fact, the reverse reaction will occur spontaneously.
$\left[\right.$ આપેલ : $K _{ sp }( AgBr )=4.9 \times 10^{-13}$ at $298 K$
$\lambda_{ Ag ^{+}}^0=6 \times 10^{-3} Sm ^2\,mol ^{-1}$
$\lambda_{ Br ^{-}}^0=8 \times 10^{-3} Sm ^2\,mol ^{-1}$
$\left.\lambda_{ NO _3^{-}}^0=7 \times 10^{-3} Sm ^2\,mol ^{-1}\right]$