Redox Reactions and Electrolysis

These flashcards cover key terms and concepts related to redox reactions and electrolysis, including definitions and processes.

Electrolysis

The breaking down of a substance using electricity.

Anode

The positive electrode in electrolysis where anions are attracted and give up electrons.

Cathode

The negative electrode in electrolysis where cations are attracted and receive electrons.

Cations

Positively charged ions that are attracted to the cathode in electrolysis.

Anions

Negatively charged ions that are attracted to the anode in electrolysis.

Half Equations

Equations that show the movement of electrons and reactions occurring at each electrode in electrolysis.

Oxidation

The loss of electrons during a chemical reaction.

Reduction

The gain of electrons during a chemical reaction.

OIL-RIG

A mnemonic to remember that Oxidation is Loss and Reduction is Gain of electrons.

Oxidizing Agent

A substance that gains electrons and is reduced in a chemical reaction.

Reducing Agent

A substance that loses electrons and is oxidized in a chemical reaction.

Oxidation State

The formal charge of an atom in a compound as determined by a set of rules.

Brine

A concentrated solution of salt, often used in electrolysis to extract halogens.

Thiosulfate

A compound used in titration to determine the concentration of oxidizing agents.

Starch Indicator

A substance added to a titration that turns blue-black in the presence of iodine.

Transitional Metals

Metals that can have variable oxidation states.

Displacement Reaction

A reaction where a more reactive halogen displaces a less reactive halogen from its salt.