frequency factor

frequency factor

[′frē·kwən·sē ‚fak·tər]
(physical chemistry)
The constant A (or ν) in the Arrhenius equation, which is the relation between reaction rate and absolute temperature T ; the equation is k = Ae- (Δ Hact/ RT), where k is the specific rate constant, Δ Hactis the heat of activation, and R is the gas constant.
References in periodicals archive ?
In the first linear zone, the apparent activation energy and frequency factor were found to be in the range of 63.
In [9] manage the interference based on fractional frequency reuse scheme; here the frequency factor is reused in HetNet in LTE advanced.
Before proceeding to tackle the actual clustering phenomena to formulate the frequency factor [omega], we will very briefly sketch the procedure and final result that have been successfully developed to fulfill objective (A) of the work, whereby the full, more accurate, four-level process scheme of Fig.
Key Words: Probable Maximum Precipitation, Hershfield method, Gumble method, Log Pearson Type- III method, Frequency factor
The focus in this work has been to determine the kinetic parameters such as activation energy frequency factor reaction rate constant as well as the enthalpy of activation.
a]), order of reaction (n), frequency factor (Z), and entropy ([DELTA][S.
The pure tone threshold model included a 10-level stimulus frequency factor (250, 500, 750, 1,000, 1,500, 2,000, 3,000, 4,000, 6,000, and 8,000 Hz) and an MS type x audiometric test frequency interaction to test for differences in mean pure tone air-conduction thresholds at different test frequencies.
The kinetic parameters, such as order of the degradation (n), energy of activation (E), frequency factor (A) and entropy change ([DELTA]S) for each step are reported in Tables 3 to 5.
The temperature dependence of the logarithm on the reaction rate versus the inverse of the temperature is shown in Figure 6 and the estimated rate constant values, activation energy and frequency factor are illustrated in Table 3.
The Arrhenius plots were calculated for oxidation of cellulose, lignin, and their mixtures by means of the activation energy and the frequency factor values.

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