How many faraday of electricity are required to deposit 10 g of calcium from molten calcium chloride using insert electrodes? (Molar mass of calcium = 40 g m o l - 1 )

Step-by-step solution

2 moles of electrons are required to deposit 1 mole of calcium Mass of calcium deposited = 10 g Molar mass of calcium = 40 g m o l - 1 ∴ N o o f m o l e s = 10 40 g m o l - 1 = 0.25 m o l 2F are required for 1 mole of calcium 'x' F are required for 0.25 mole of calcium ∴ x = 0.25 × 2 = 0.5 F