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NEET · Chemistry · STD 11 - 7. Redox reactions

એસિડિક માધ્યમમાં \(H_2O_2\) એ \(Cr_2O_7^{2-}\) માં રૂપાંતર કરે છે, જેમાં બે \((-O-O-)\) બંધ છે. \(CrO_5\) માં \(Cr\) ની ઓક્સિડેશન અવસ્થા ........... થશે.

  1. A \(+5\)
  2. B \(+3\)
  3. C \(+6\)
  4. D \({-10}\)
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Correct Answer

(C) \(+6\)

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When \(H_{2} O_{2}\) is added to an acidified solution of a dichromate \(C r_{2} O_{7}^{2-},\) a deep blue coloured complex, chromic peroxide \(C r O_{5}\left[o r C r O\left(O_{2}\right)_{2}\right]\) is formed. \(C r_{2} O_{7}^{2-}+2 H^{+}+4 H_{2} O_{2} \rightarrow\)\(\underbrace{2 C r O\left(O_{2}\right)_{2}}_{\text {Chromic peroxide }}+5 H_{2} O\) This deep blue coloured complex has the following structure
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