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The electrochemical equivalence of silver is 0.0012g/C…

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The electrochemical equivalence of silver is 0.0012g/C. 36.0g of silver is to be deposited by electrolysis on a surface by passing a steady current for 5.0 minutes, the current must be

A. 6000A

B. 100A

C. 10A

D. 1A

QUICK ANSWER…

B

EXPLANATION…

M = ZIT

Where M = mass = 36g,

Z = electrochemical equivalence = 0.0012g/C,

T = time = 5 minutes = 5 x 60 = 300 seconds.

I = current = ?

Therefore I = M/ZT = 36/(0.0012 x 300) = 36/ 0.36 = 100A

Now for the right answer to the above question:

  1. Option A is incorrect.
  2. Option B is correct.
  3. C is incorrect.
  4. D is not the correct answer.
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HELPFUL TIPS…

You may please note these/this:

  • Faraday’s first law of electrolysis can mathematically be represented as M = ZIT.

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/ culled from 2018 JAMB-UTME physics question 13 /

The electrochemical equivalence of silver is 0.0012g/C... » QuizTablet
The electrochemical equivalence of silver is 0.0012g/C... » QuizTablet

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