Faraday law

FARADAY LAW

• Amount of substance produce of each electrode is directly proportional to quantity of charge flowing through the cell
  
• Also called Faraday's First Law of electrolysis.
  

CALCULATING USING FARADAY'S LAW

• Main steps
  • Balance half reaction to find number of moles of electrons.
  • Needed per mole product.
  • Use Faraday's constant (96500C / mol ) to find corresponding charge.
  • Use molar mass / mole to find charge needed for a given mass / mole of product

ELECTRIC CHARGE (Q)

Charge ( Q )         =    Current ( I )    ×    time ( t )

Unit Coulomb , C        Ampere , A        Second , s