${E_{C{u^{ + 2}}/Cu}}\, = \,\,E_{C{u^{ + 2}}/Cu}^ \circ \, - \,\,\frac{{0.059}}{2}\log \frac{1}{{[C{u^{ + 2}}]}}\,\,........(1)$
${{E'}_{C{u^{ + 2}}/Cu}}\, = \,\,E_{C{u^{ + 2}}/Cu}^ \circ \, - \,\,\frac{{0.059}}{2}\log \,\frac{{100}}{{[C{u^{ + 2}}]}}\,\,\,\,..........(2)$
${{E'}_{C{u^{ + 2}}/Cu}}\, = \,\,{e_{C{u^{ + 2}}/Cu}}\,\, - \,\,0.059$
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નીચે આપેલા ક્યા ગેલ્વેનિક કોષમાં થાય છે ?
$H_3PO_4 + OH^- \rightarrow H_2PO_4^- + H_2O$ ;
$H_3PO_4 + 2OH^- \rightarrow HPO_4^{2-} + 2H_2O$ ;
$H_3PO_4 + 3OH^- \rightarrow PO_4^{3-} + 3H_2O$