A metal plate of dimension of (1 2 cm^2) has to be coated on both the sides by Cu metal. How long does it take to deposit Cu of 0.01 cm thickness, if 1.5A current is used? [Electrochemical equivalenc…

Question

A metal plate of dimension of (1 2 cm^2) has to be coated on both the sides by Cu metal. How long does it take to deposit Cu of 0.01 cm thickness, if 1.5A current is used? [Electrochemical equivalence of Cu is 0.0003g/C and the density of Cu is 9g/ cm^3 ]

Accepted Answer

Correct answer: B. (b) Volume= Area ( Thickness 2 ) =1 2 2 0.01=0.04 cm^3 Mass of material deposited = volume density =0.04 9=0.36 g According to Faraday law, m=Z It I=1.5 A ,Z=0.0003 g/Ct= m ZI= 0.360.0003 1.5 ⇒t=800 s

$A metal plate of dimension of (1 \times 2 cm^{2}) has to be coated on both the sides by Cu metal. How long does it take to deposit Cu of 0.01 cm thickness, if 1.5 A current is used? [Electrochemical equivalence of Cu is 0.0003 g / C and the density of Cu is 9 g / cm^{3}]$

Solution

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