Final answer:
To electroplate 25.0 grams of chromium, it would take approximately 4,583 minutes.
Step-by-step explanation:
To calculate the time required for electroplating, we need to use the equation:
time = charge / current
First, let's calculate the charge required to electroplate 25.0 grams of chromium. The stoichiometry of the chromium(III) reduction process requires three moles of electrons for each mole of chromium(0) produced. So, the total charge required is:
4.56 mol Cr x 3 mol e / 96485 C = 1.32 × 10⁶ C
Now, we can calculate the time:
time = 1.32 × 10⁶ C / 4.80 A = 275,000 seconds
Finally, we can convert the time to minutes:
275,000 seconds / 60 = 4,583 minutes