What are the energy costs for obtaining 1 kg of aluminum if the electrolysis of aluminum salt is carried out under a voltage of 5.5 V.
Initial data: m (mass of the obtained aluminum) = 1 kg; U (voltage under which electrolysis of aluminum salt is carried out) = 5.5 V.
Reference data: according to the condition k (electrochemical equivalent of aluminum) = 0.093 * 10 ^ -6 kg / C.
The energy consumption for obtaining 1 kg of aluminum is determined by the formula: Q = U * I * t = U * (m / k).
Calculation: Q = 5.5 * (1 / 0.093 * 10 ^ -6) = 59.14 * 10 ^ 6 J = 59.14 MJ (16.43 * kW * h).
Answer: Energy consumption for the production of aluminum is 59.14 MJ or 16.43 * kW * h.
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