How many faraday of electricity is required to produce 10 ~g of calcium metal (molar mass =40 ~g ~mol ⁻¹ ) from calcium ions?

Step-by-step solution

2 e ⁻+ Ca ²⁺ Ca _ ( s ) Charge of 1 ~mol electron =1 faraday of electricity To produce 1 ~mol calcium metal 2 ~F electricity is required Moles of calcium = 10 40 =0.25 To produce 0.25 ~mol calcium electricity required =2 0.25=0.5 ~F