How much charge is required, when 1 mole of \( \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \) reduce to ...
How much charge is required, when 1 mole of \( \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \) reduce to form 1 mole of \( \mathrm{Cr}^{3+} \) ?
(a) \( 6 \mathrm{~F} \)
(b) \( 3 \mathrm{~F} \)
(c) \( 1 \mathrm{~F} \)
(d) \( 2 \mathrm{~F} \)
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