CrO _ 4 ^ 2- reacts with H + as 2 CrO _ 4 ^ 2- +2 H ^ + Cr _ 2 O _ 7 ^ 2- + H _ 2 O The…
Chemistry · JEE Main · NTA Exams — d- and f-Block Elements
\(\mathrm{CrO}_{4}^{2-}\) reacts with H+ as
\(2 \mathrm{CrO}_{4}^{2-}+2 \mathrm{H}^{+} \rightarrow \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{H}_{2} \mathrm{O}\)
The change in oxidation number of Cr is
\(2 \mathrm{CrO}_{4}^{2-}+2 \mathrm{H}^{+} \rightarrow \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{H}_{2} \mathrm{O}\)
The change in oxidation number of Cr is
- +5
- +7
- +6
- zero
Answer
(D) zero
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