The electrochemical equivalent of a substance | vedclass

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(D) According to Faraday's law of electrolysis,the mass $m$ of a substance deposited is given by $m = ZIt$,where $Z$ is the electrochemical equivalent

Vedclass · Accepted Answer

$4$

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(D) According to Faraday's law of electrolysis,the mass $m$ of a substance deposited is given by $m = ZIt$,where $Z$ is the electrochemical equivalent,$I$ is the current,and $t$ is the time.Given that the electrochemical equivalent $Z$ is numerically equal to the mass $m$ deposited,we have $m = Z$.Substituting this into the equation: $Z = ZIt$.Dividing both sides by $Z$ (assuming $Z 
eq 0$),we get $1 = It$.Given $t = 0.25\,s$,we have $1 = I 	imes 0.25$.Therefore,$I = \frac{1}{0.25} = 4\,A$.

The electrochemical equivalent of a substance is numerically equal to the mass of the substance deposited if a current $I$ flows through the electrolyte for $0.25\,s$. The value of $I$ is ................ $A$.

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