\(1\,gm\) of \(Al \) is obtained by passing a current of \(3 \times \frac{{96500}}{{27}}\,C.\)
\( 5.12 × 10^3\ gm\) of \(Al \) is obtained by passing a current of \(3 \times \frac{{96500}}{{27}} \times 5.12 \times 1000\)
\(= 1.83 × 10^7\,C × 3 = 5.49 × 10^7\,C.\)
$Pt _{( s )}\left| H _2( g , 1\,atm )\right| H ^{+}( aq , 1 M )|| Fe ^{3+}( aq ), Fe ^{2+}( aq ) \mid Pt ( s )$
$298\,K$ પર જયારે કોષ નો પોટેન્શિયલ $0.712\,V$ હોય તો $\left[ Fe ^{2+}\right] /\left[ Fe ^{3+}\right]$ નો ગુણોત્તર $.......$ છે.
આપેલ:$Fe ^{3+}+ e ^{-}= Fe ^{2+}, E ^{\circ} Fe ^{3+}, Fe ^{2+} \mid Pt =0.771$
$\frac{2.303 RT }{ F }=0.06\,V$