ના વડે અનાવૃત (અનાચ્છાદિત) કરવાથી \(K _2 Cr _2 O _7\) પત્ર ને મંદ \(H _2 SO _4\) સાથે એસિડિક બનાવતાં લીલા માં ફેરવાય છે.

A કાર્બન ડાયોક્સાઈડ
B સલ્ફર ટ્રાયોકસાઈડ
C હાઈડ્રોજન સલ્ફાઈડ
D સલ્ફર ડાયોકસાઈડ

Verified Solution

Answer & Solution

Correct Answer

(D) સલ્ફર ડાયોકસાઈડ

Step-by-step Solution

Detailed explanation

\(3 SO _2+ Cr _2 O _7^{2-}+2 H ^{+} \rightarrow 3 SO _4^{2-}+2 Cr ^{+3}+ H _2 O\)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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