Electrochemistry

Devices that convert chemical energy

Devices that convert chemical energy to electrical energy (galvanic cells) or electrical energy to chemical energy (electrolytic cells). They consist

The potential of an electrode measured

The potential of an electrode measured against standard hydrogen electrode (SHE) under standard conditions. It indicates the tendency of a species to

E(cell) = E°(cell)

E(cell) = E°(cell) - (RT/nF)ln(Q), where Q is the reaction quotient. It relates cell potential to concentration of reactants and products at non-stand

Conductivity (κ) measures the ability

Conductivity (κ) measures the ability of a solution to conduct electricity. Molar conductivity (Λm = κ/c) is conductivity per unit concentration. Both

At infinite dilution

At infinite dilution, molar conductivity of an electrolyte equals the sum of individual ionic conductivities: Λ°m = ν₊λ°₊ + ν₋λ°₋. This law shows inde