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  4. The time required to coat aluminium metal on the surface of a square plate of length 20 cm about 5 mm thickness on both sides by using molten AlCl3 solution and 10 A current is nearly [Specific gravity of textAl = 1.8 textg textmL- 1 ]

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Q. The time required to coat aluminium metal on the surface of a square plate of length $20$ $cm$ about $5$ $mm$ thickness on both sides by using molten $AlCl_{3}$ solution and $10$ $A$ current is nearly [Specific gravity of $\text{Al} = 1.8 \, \text{g} \, \text{mL}^{- 1}$ ]

NTA AbhyasNTA Abhyas 2020Electrochemistry

Solution:

$m=20\times 20\times 0.5\times 2\times 1.8=720$ $gm$ ;

$m=\frac{9}{96500}\times 10\times t$

$t=214.44$ $hr$