How many seconds are required to produce 4.00 g of aluminum metal from the electrolysis of molten AlCl₃ with an electrical current of 12.0 A?

Question

Quizplus · Accepted Answer

To find the time, use the formula: time = (moles of electrons × Faraday's constant) / current. First, calculate moles of Al: 4.00 g / 26.98 g/mol = 0.148 mol. Al requires 3 moles of electrons per mole, so 0.148 mol × 3 = 0.444 mol electrons. Convert to coulombs: 0.444 mol × 96485 C/mol = 42864 C. Finally, time = 42864 C / 12.0 A = 3572 s, which is approximately 3.57 × 10³ seconds.

How Many Seconds Are Required to Produce 4