Intro to Electrochemical Cells definitions Flashcards
Intro to Electrochemical Cells definitions
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Electrochemical Cell A device with two half-cells connected by a wire, facilitating redox reactions to produce or consume electricity. Half Cell A container with an electrode immersed in an electrolyte, representing a half-reaction in an electrochemical cell. Electrode A metal rod in a half-cell where oxidation or reduction occurs, facilitating electron transfer. Electrolyte A solution in which the electrode is immersed, allowing ions to move and participate in redox reactions. Redox Reaction A chemical process involving the transfer of electrons, comprising oxidation and reduction. Oxidation A process where an element loses electrons, increasing its oxidation state. Reduction A process where an element gains electrons, decreasing its oxidation state. Cell Potential The energy difference measured in volts as electrons move between half-cells in an electrochemical cell. Standard Conditions Conditions of 25°C, 1 M concentration, 1 atm pressure, and pH 7 used to measure standard cell potential. Standard Cell Potential The cell potential measured under standard conditions, indicating the energy difference in a redox reaction. Non-standard Cell Potential The cell potential measured under conditions differing from standard, affecting the energy difference. Galvanic Cell An electrochemical cell with a positive cell potential, producing electricity. Electrolytic Cell An electrochemical cell with a negative cell potential, consuming electricity. Volts The unit of measurement for cell potential, indicating the energy difference in an electrochemical cell.
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