Electrochemistry: Daniell Cell Fundamentals

Vocabulary flashcards covering the components, reactions, and electrode potentials of the Daniell Cell as discussed in the electrochemistry lecture notes.

Electrochemical Cell

A device capable of either generating electrical energy from chemical reactions or facilitating chemical reactions through the introduction of electrical energy.

Daniell Cell Reaction

The overall cell reaction represented as $Zn(s) + Cu^{2+}(aq) \rightarrow Zn^{2+}(aq) + Cu(s)$.

Anode

The electrode where oxidation occurs; in a Daniell cell, this is the $Zn(s)$ electrode.

Cathode

The electrode where reduction occurs; in a Daniell cell, this is the $Cu(s)$ electrode.

Salt Bridge

A component containing a salt such as $KCl$ mixed with Agar-agar that connects the two half-cells.

Oxidation Half-reaction

The specific reaction taking place at the anode: $Zn(s) \rightarrow Zn^{2+}(aq) + 2e^{-}$.

Reduction Half-reaction

The specific reaction taking place at the cathode: $Cu^{2+}(aq) + 2e^{-} \rightarrow Cu(s)$.

Standard Electrode Potential for $Zn$

The potential associated with the zinc electrode, which is $-0.761$ or simply $-0.76$.

Standard Electrode Potential for $Cu$

The potential associated with the copper electrode, which is $0.34$.

Galvanic Cell

A type of electrochemical cell, such as the Daniell cell, that produces an electric current from a spontaneous redox reaction.