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Related to rate constant: equilibrium constant
rate constant[′rāt ‚kän·stənt]
Numerical constant in a rate-of-reaction equation; for example, rA = kC aA C bB C cC, where CA ,CB , and CC are reactant concentrations, k is the rate constant (specific reaction rate constant), and a, b, and c are empirical constants.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.