\(1\,gm\) 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 \(3 \times \frac{{96500}}{{27}} \times 5.12 \times 1000\)
\(= 1.83 × 10^7\,C × 3 = 5.49 × 10^7\,C.\)
$E_{C{r_2}O_7^{2 - }/C{r^{3 + }}}^o = 1.33\,V\,,\,E_{MnO_4^ - /M{n^{2 + }}}^o = 1.51\,V$ છે. તો ઘટકો $(Cr, Cr^{3+}, Mn^{2+}$ અને $Cl^-)$ ની રિડક્શન ક્ષમતાનો સાચો ક્રમ જણાવો.