Redox Flashcards
Anode
An electrode at which an oxidation reaction occurs
Cathode
An electrode at which a reduction reaction occurs
Electrochemical cell
A device which converts chemical energy into electrical energy
Electrochemical series
A list of chemical species arranged in order of their strengths as oxidants
Electrolytic conductor
(or electrolyte) A solution of molten substance that conducts electricity by means of the movement of ions
Galvanic cell
A device that concerts chemical energy into electrical energy
Galvonometer
A device used to detect the movement of charge
Half equation
An equation involving either an oxidation or a reduction process. The electrons lost or gained in this process are shown in the equation
Impressed current
A low-voltage power supply that is used to force electrons on to an electrode to ensure that a reduction reaction occurs at its surface
Oxidant
A substance that causes another substance to undergo an oxidation reaction; an oxidant accepts one or more electrons from the substance it oxidises
Oxidation
A reaction in which a substance loses one or more electrons or undergoes an increase in oxidation numbers
Redox reaction
A reaction that involves both oxidation and reduction
Reductant
A substance that causes another substance to undergo a reduction reaction; a reductant donates one or more electrons to the substance it reduces
Reduction
A reaction in which a substance gains one or more electrons or undergoes a decrease in oxidation number
Sacrificial protection
Protecting a metal from corrosion by coating it with a more reactive metal that will be preferentially oxidised
