For an elementary reaction the temperature dependence of the rate constant is given by the Arrhenius equationK(T) =νe^(-Ea/RT) where ν is called the preexponential factor (sometimes called prefactor) and Ea the activation energy (in kJ mol^(–1)).
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![For an elementary reaction the temperature dependence of the rate constant is given by the Arrhenius equationK(T) =νe^(-Ea/RT) where ν is called the preexponential factor (sometimes called prefactor) and Ea the activation energy (in kJ mol^(–1)).](/uploads/image/z/12221843-59-3.jpg?t=For+an+elementary+reaction+the+temperature+dependence+of+the+rate+constant+is+given+by+the+Arrhenius+equationK%28T%29+%3D%CE%BDe%5E%28-Ea%2FRT%29+where+%CE%BD+is+called+the+preexponential+factor+%28sometimes+called+prefactor%29+and+Ea+the+activation+energy+%28in+kJ+mol%5E%28%E2%80%931%29%29.)
For an elementary reaction the temperature dependence of the rate constant is given by the Arrhenius equationK(T) =νe^(-Ea/RT) where ν is called the preexponential factor (sometimes called prefactor) and Ea the activation energy (in kJ mol^(–1)).
For an elementary reaction the temperature dependence of the rate constant is given by the Arrhenius equation
K(T) =νe^(-Ea/RT)
where ν is called the preexponential factor (sometimes called prefactor) and Ea the activation energy (in kJ mol^(–1)).One can also express the activation energy in joules per single molecule (a very small number),provided one replaces the gas constant,R,by Boltzmann constant,k_B.
我想知道气体常数是怎么用Boltzmann常数来取代的
For an elementary reaction the temperature dependence of the rate constant is given by the Arrhenius equationK(T) =νe^(-Ea/RT) where ν is called the preexponential factor (sometimes called prefactor) and Ea the activation energy (in kJ mol^(–1)).
如果我们用Boltzmann constant来表示Universal gas constant R的话,activation energy 的单位就是joules per single molecule了.(一般非常小)
气体常数比Avogadro's constant就是 Boltzmann constant.(这一点你从dimensional analysis的角度很好理解,看看单位的变化)