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reaction rate |
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reaction rate: see chemical reaction chemical reaction, process by which one or more substances may be transformed into one or more new substances. Energy is released or is absorbed, but no loss in total molecular weight occurs. ..... Click the link for more information. . reaction rateSpeed at which a chemical reaction proceeds, in terms of amount of product formed or amount of reactant consumed per unit of time. The reaction rate depends on the nature of the reacting substances and the type of chemical change, as well as temperature and pressure, especially if gases are involved. In general, the reactions of ions occur very rapidly, but those in which covalent bonds are formed or broken are slower. Catalysts usually accelerate reaction rates. The prediction, measurement, and interpretation of reaction rates are subjects of the branch of chemistry known as chemical kinetics. See also mass action, law of. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| If the coolant water heats up appreciably, the reaction rate slows down because the neutrons are not slowed down as much. where, k = velocity constant or specific reaction rate constant and [DELTA]H = heat of reaction (vulcanization) or cure enthalpy. When you make small particles, the reaction rate increases substantially," says Wei-xian Zhang of Lehigh University in Bethlehem, Pa. |
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