In acidic medium,$K_2Cr_2O_7$ shows oxidising action as represented in the half reaction:
$Cr_2O_7^{2-} + XH^+ + Ye^- \rightarrow 2A + ZH_2O$
$X, Y, Z$ and $A$ are respectively:
$Cr_2O_7^{2-} + XH^+ + Ye^- \rightarrow 2A + ZH_2O$
$X, Y, Z$ and $A$ are respectively:
- A$8, 6, 4$ and $Cr_2O_3$
- B$14, 7, 6$ and $Cr^{3+}$
- C$8, 4, 6$ and $Cr_2O_3$
- D$14, 6, 7$ and $Cr^{3+}$
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