A current of 2.50 A was passed through an electrolytic cell containing molten CaCl₂ for 4.50 hours.How many moles of calcium metal should be deposited?

Question

Quizplus · Accepted Answer

The amount of charge passed (Q) can be calculated using the formula Q = It, where I is the current, and t is the time.

Q = 2.50 A x 4.50 h x 3600 s/h = 40,500 C

The number of moles of calcium (n) can be calculated using the formula n = Q/F, where F is the Faraday constant (96,485 C/mol).

n = 40,500 C / 96,485 C/mol = 0.420 mol

Therefore, the correct answer is B.

A Current of 2