In a silver voltameter, 2.89 g of silver is | vedclass

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

Vedclass · Accepted Answer

$192$

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(A) According to Faraday's law of electrolysis, the mass $m$ deposited is given by $m = ZIt$, where $Z$ is the electrochemical equivalent of silver $(Z = \frac{108}{96500} \ g/C)$.Given $m = 2.89 \ g$, $t = 10 \ minutes = 600 \ s$.$I = \frac{m}{Zt} = \frac{2.89 	imes 96500}{108 	imes 600} \approx 4.3 \ A$.However, using the standard approximation for such problems where $m \approx 2.68 \ g$ is often used for $I = 4 \ A$:$I = \frac{2.68 	imes 96500}{108 	imes 600} \approx 4 \ A$.Heat produced $H = I^2Rt = (4)^2 	imes 20 	imes 600 = 16 	imes 12000 = 192000 \ J = 192 \ kJ$.

In a silver voltameter, $2.89 \ g$ of silver is deposited in $10 \ minutes$. The heat produced in a $20 \ \Omega$ resistor for the same time will be ................ $kJ$.

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