Dichromate Half Cell EMF pH (Jee Mains)

Electric Potential

Medium

Dichromate Half Cell EMF pH

Consider the following half cell reaction
$C{r_2}O_7^{2 - }(aq) + 6{e^ - } + 14{H^ + }(aq) \to 2C{r^{3 + }}(aq) + 7{H_2}O(l)$
The reaction was conducted with the ratio of $\frac{{{{[C{r^{3 + }}]}^2}}}{{[C{r_2}O_7^{2 - }]}} = {10^{ - 6}}$ . The pH value at which the EMF of the half cell will become zero is ________ . (nearest integer value)
[Given : standard half cell reduction potential $E_{C{r_2}O_7^{2 - },{H^ + }/C{r^{3 + }}}^o = 1.33V,\frac{{2.303RT}}{F} = 0.059V$ ]

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