CUET · CHEMISTRY · PYQ PAPER 2023
Identify the correct statement:
- A \(CrO\) is acidic, \(Cr_2O_3\) is basic, \(CrO_3\) is amphoteric
- B \(CrO\) is basic, \(Cr_2O_3\) is acidic, \(CrO_3\) is amphoteric
- C \(CrO\) is basic, \(Cr_2O_3\) is amphoteric, \(CrO_3\) is acidic
- D \(CrO\) is amphoteric, \(Cr_2O_3\) is basic, \(CrO_3\) is acidic
Answer & Solution
Correct Answer
(C) \(CrO\) is basic, \(Cr_2O_3\) is amphoteric, \(CrO_3\) is acidic
Step-by-step Solution
Detailed explanation
The acidity of transition metal oxides increases with the oxidation state of the metal. \(CrO\) (Cr in +2 oxidation state) is basic. \(Cr_2O_3\) (Cr in +3 oxidation state) is amphoteric. \(CrO_3\) (Cr in +6 oxidation state) is acidic. Therefore, the correct statement is: \(CrO\)…
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