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

\(Fe ^{2+}\) के \(10\,mL\) के अम्लीय माध्यम में अनुमापन में, \(0.02 M K _2 Cr _2 O _7\) के \(20\,mmL\) उपयोग होते हैं। \(Fe ^{2+}\) विलयन की मोलरता \(........\times 10^{-2}\,M\) हैं। (निकटतम पूर्णाक में)

  1. A \(22\)
  2. B \(23\)
  3. C \(24\)
  4. D \(25\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(24\)

Step-by-step Solution

Detailed explanation

Eq. of \(K _{2} Cr _{2} O _{7}=\) Eq. of \(Fe ^{2+}\) \((Molarity\) \(\times\) \(volume\) \(\times\) \(n.f)\) of \(K _{2} Cr _{2} O _{7}=\) (molarity \(\times\) volume \(\times\) n.f ) of \(Fe ^{2+}\) \(0.02 \times 20 \times 6= M \times 10 \times 1\) \(M =0.24\) Molarity…
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