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(A) According to Faraday's first law of electrolysis,the mass $(W)$ of a substance deposited or liberated at an electrode is directly proportional to

Vedclass · Accepted Answer

$W = ZQ$

Vedclass · Answer

(A) According to Faraday's first law of electrolysis,the mass $(W)$ of a substance deposited or liberated at an electrode is directly proportional to the quantity of electricity $(Q)$ passed through the electrolyte. $W \propto Q$ $W = ZQ$ Since $Q = I 	imes t$,where $I$ is the current in amperes and $t$ is the time in seconds,the equation can be written as: $W = Z 	imes I 	imes t$ Here,$Z$ is the electrochemical equivalent of the substance. Therefore,the correct option is $A$.

According to the first law of Faraday,the weight of a substance discharged at the electrode is:

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