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AP EAMCET202317 May 2023Evening ShiftChemistryd and f Block ElementsActual

Arrange the oxides CrO , CrO ₃ and Cr ₂ O ₃ in the decreasing order of acidic strength

Options

  1. ACrO ₃> Cr ₂ O ₃> CrO
  2. BCrO ₃> CrO > Cr ₂ O ₃
  3. CCrO > Cr ₂ O ₃> CrO ₃
  4. DCrO > CrO ₃> Cr ₂ O ₃

Correct answer

A. CrO ₃> Cr ₂ O ₃> CrO

Step-by-step solution

Cr in higher oxidation state will be more acidic. Thus, the order of acidic strength will be :- +6 CrO ₃ > +3 CrO O ₃> +2 Cr O

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