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NEET · Chemistry · STD 12 - 2. Electrochemistry

How many gram of cobalt metal will be deposited when a solution of cobalt \((II)\) chloride is electrolyzed with a current of \(10\) amperes for \(109\) minutes \((1\) Faraday \(= 96,500\, C;\) Atomic mass of  \(Co = 59\, u)\)

  1. A \(4.0\)
  2. B \(20.0\)
  3. C \(40.0\)
  4. D \(0.66\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(20.0\)

Step-by-step Solution

Detailed explanation

\(W=\frac{I t E}{96,500}=\frac{10 \times 109 \times 60 \times 59}{96500 \times 2}=20\)