The ammeter connected to the circuit with the electrolytic bath showed 0.2 A. Is the ammeter reading correct if 250 mg

The ammeter connected to the circuit with the electrolytic bath showed 0.2 A. Is the ammeter reading correct if 250 mg of silver was released at the cathode of the bath in 25 minutes?

To check the accuracy of the readings of the ammeter under consideration, we use the formula: m = kc * I * Δt, from where we express: I = m / (kc * Δt).

Const: kс – electrochemical equivalent of silver (kс = 1.118 * 10-6 kg / C).

Data: m is the mass of the released silver (m = 250 mg = 250 * 10-6 kg); Δt is the duration of electrolysis (Δt = 25 min, in SI system Δt = 1500 s).

Let’s perform the calculation: I = m / (kc * Δt) = 250 * 10-6 / (1.118 * 10-6 * 1500) ≈ 0.149 A <0.2 A.

Answer: The readings of the ammeter in question are incorrect.