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Definition of Rate constant

Rate constant Definition from Science & Technology Dictionaries & Glossaries
Electrochemistry Dictionary
"The rate of a chemical reaction is proportional to the product of the concentrations of all the reactants taking part in the reaction, with the ""rate constant"" the proportionality factor. In other words, the rate constant is the rate of the reaction when all reactants are present in unit concentration. The rate constant of a chemical reaction is a function of temperature and pressure. For an electrode reaction the rate constant is also a function of the electrode potential. "
General Chemistry Glossary
(k) A rate constant is a proportionality constant that appears in a rate law . For example, k is the rate constant in the rate law d[A]/dt = k[A]. Rate constants are independent of concentration but depend on other factors, most notably temperature.
Rate constant Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
In chemical kinetics a reaction rate constant, k or , quantifies the rate of a chemical reaction.

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