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Electrochemistry Dictionary - Q

• Quad: a measure of energy equivalent to a quadrillion (a million times a million times one thousand, or 1015) British thermal units (Btu).

• Quasi-reversible electrode: An electrode with a quasi-reversible electrode reaction.

• Quasi-reversible electrode reaction: A qualitative term for an intermediate speed electrode reaction. An electrode reaction having an intermediate exchange current density, between that of an irreversible and a reversible electrode reaction.