Redox 6

Voltaic Cell VS Electrolytic Cell

Operations of Electrolytic Cell

* indicates difference from Voltaic Cell

Electrolysis of Motel Salt: When a current runs through a molten salt, it decomposes Calculations of E˚cell is the same as voltaic cell (preferred METHOD 1)

Example: Silver coating spoon

Calcula

Calculating amount of material produced during electroplating

q = l•tWhere: q = charge (coulombs) l = current (amps) t = time (s)

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2. Finding the Number of Electrons flowed through Electrolytic Cell

1.  Finding Charge of the Electrolytic Cell

Where: n e = Number of Electrons q = charge F = Faraday's Constant (9.65 x 10ˆ4 C / mol)

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3. Find moles of material via Reduction Half Cell equations and Stoichiometry

Factors affecting the amount of metals formed:Amount of Charge transferred (dependent on current and time)An increase in charge leads to an increase in amount of metal formed Ion Chargelower ion charge = greater amount of metal formed

Introduction

Components

Electroplating

Calculations