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JEE Mains · Chemistry · STD 12 - 2. Electrochemistry

\(1\, mol\) \(Cr _{2} O _{7}^{2-}\)  \(Cr ^{3+}\) નું રીડક્શન કરવા જરૂરી વિદ્યુતનો જથ્થો ફેરાડેમાં \(\dots\dots\) છે.

  1. A \(50\)
  2. B \(6\)
  3. C \(600\)
  4. D \(300\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(6\)

Step-by-step Solution

Detailed explanation

\(Cr _{2} O _{7}^{-2}+6 e ^{-} \longrightarrow 2 Cr ^{+3}\) \(1 \,mol \quad 6\, mol\) \(\Rightarrow\) number of faradays \(=\) moles of electrons \(=6\)
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