Answer to Question #121310 in General Chemistry for Samuel

Question

Calculate the volume of oxygen liberated by 9,650 Coulomb's of copper formed when 100A current pass through a copper salt for 80mins

Answer 1

1 Farad = 96500 C

so 9650 C = 0.1 Farad

By 1 Farad we mean that on passing 1 Farad of charge we obtain 1 equivalent of metal X through electrolysis deposition

hence by 0.1 Farad we will get 0.1 Equivalent of element X

here Element X is copper which is generally in +2 state hence its equivalent weight is molecular weight/2

mass of copper deposited = $0.1\times\frac{63.5}{2}=3.17 grams$