A solution containing \( 4.5 \mathrm{mM} \) of \( \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \) and \( ...
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A solution containing \( 4.5 \mathrm{mM} \) of \( \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \) and \( 15 \mathrm{mM} \mathrm{Cr} \) shows a \( \mathrm{pH} \) of 2.0. Calculate the potential of half reaction. (Standard potential of the reaction \( \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \longrightarrow \mathrm{Cr}^{3+} \) is 133V).
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