Answer to Question #175497 in Organic Chemistry for TUHIN SUBHRA DAS

Question

Calculate the amount of chlorine gas evolved during the electrolysis of molten potassium 

chloride on passing a current of 0.5 A for two hours through it.

Answer 1

I= 0.5A, t=2hrs= 2x3600s=7200s

Q=It= 0.5x7200=3600C= 3600/96500= 0.037F

The half reaction occurring at the anode is

2Cl^- ---> Cl₂ + 2e^-

2F liberates 1mol of Cl₂

0.037F will liberate 1/2 x 0.037= 0.0186mole of Cl₂