Chemistry-Oxidation Number
NEET Chemistry Oxidation Number Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 11
Assertion (A): In the reaction between potassium dichromate and sodium sulphite in acidic solution, dichromate acts as an oxidizing agent. | Reason (R): In acidic solutions, dichromate ions are reduced to chromium(III) ions.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false.
Correct Answer
Option A
Detailed Explanation
The dichromate ion (Cr2O7)2- is reduced to Cr3+ ions in acidic solution, confirming its role as an oxidizing agent. This aligns with the NCERT context describing redox reactions involving dichromate ions.
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