Question

Determine the mass (in g) of calcium metal (atomic weight 40.08 g/mol) produced with the electrolysis of molten caCl₂ for 1.55 hr with an electrical current of 14.9 a. Express your answer in decimal notation to 1 decimal place, without units.

Answer 1

The mass of calcium metal produced with the electrolysis of molten CaCl₂ is 0.121 g.

Step-by-step explanation:

The mass of calcium metal produced with the electrolysis of molten CaCl₂ can be calculated using the formula:

Mass = (Current × Time × Atomic Weight) / (2 × Faraday's Constant)

In this case, the current is 14.9 A, the time is 1.55 hours, the atomic weight of calcium is 40.08 g/mol, and Faraday's constant is 96,485 C/mol.

Plugging in the values, we get:

Mass = (14.9 × 1.55 × 40.08) / (2 × 96485)

= 0.121 g (to 1 decimal place).