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JEE Mains · Chemistry · STD 11 - 7. Redox reactions

\(0.288 \,g\) फेरस ऑक्सैलेट के, अम्लीय माध्यम में, अभिक्रिया हेतु \(0.02 \,M K _{2} Cr _{2} O _{7}\) के जिस आयतन \(( mL\) में) की आवश्यकता होगी, वह है ............ । \(\left( Fe\right.\) का मोलर द्रव्यमान = \(56 \,g mol ^{-1}\) )

  1. A \(55\)
  2. B \(52\)
  3. C \(60\)
  4. D \(50\)
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Answer & Solution

Correct Answer

(D) \(50\)

Step-by-step Solution

Detailed explanation

\(K _{2} Cr _{2} O _{7}+ FeC _{2} O _{4} \longrightarrow Cr ^{+3}+ Fe ^{+3}+ CO _{2}\) \(n=6 \quad \quad n=3\) \(\frac{0.02 \times 6 \times V ( mL )}{1000}=\frac{0.288}{144} \times 3\) \(\Rightarrow \quad V =50 mL\)
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