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During the electrolysis of copper (II) tetraoxosulphate (VI) solution, an ammeter shows a steady reading...

Physics
WAEC 1997
During the electrolysis of copper (II) tetraoxosulphate (VI) solution, an ammeter shows a steady reading of 1A for 30minutes while 6.6 x \(10^{-4}\)kg of copper is liberated. Calculate the error in the ammeter The electrochemical equivalent of copper is 3.30 x \(10^{-7}kgC{-1}\)
  • A. 0.001A
  • B. 0.011A
  • C. 0.111A
  • D. 1A
  • E. 1.1A
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Correct Answer: Option C
Explanation
m=zIt, \(I=\frac{m}{zt}= \frac{6.6\times10^{-4}}{3.3 \times10^{-7}\times 1800}=1.1111\\ \)error=1.1111-1.0=0.111A.
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