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  4. K2Cr2O7 in acidic medium converts into

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Q. $K_2Cr_2O_7$ in acidic medium converts into

AIIMSAIIMS 2013The d-and f-Block Elements

Solution:

$ Cr_2O^{2-} + 14H^+ + 6e^- \rightarrow 2Cr^{3+} + 7H_2O$