翻訳と辞書 Words near each other ・ Eyyal ・ Eyyub Yaqubov ・ Eyyvah Eyvah ・ Eyyvah Eyvah 2 ・ Eyyübiye ・ Eyres-Moncube ・ Eyreton ・ Eyreton Branch ・ Eyrewell Forest ・ Eyrgun ・ Eyrie ・ Eyrie (novel) ・ Eyrie Bay ・ Eyrieux (river) ・ Eyring ・ Eyring equation ・ Eyring Research Institute ・ Eyring Science Center ・ Eyroles ・ Eyrosuchus ・ Eyrth, Wynd and Fyre ・ Eys ・ Eysarcoris ・ Eysarcoris venustissimus ・ Eyschen Ministry ・ Eysenck ・ Eysenck Personality Questionnaire ・ Eysenhardtia ・ Eysenhardtia orthocarpa ・ Eysenhardtia texana Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Eyring equation ： ウィキペディア英語版 Eyring equation The Eyring equation (occasionally also known as Eyring–Polanyi equation) is an equation used in chemical kinetics to describe the variance of the rate of a chemical reaction with temperature. It was developed almost simultaneously in 1935 by Henry Eyring, Meredith Gwynne Evans and Michael Polanyi. This equation follows from the transition state theory (''aka'', activated-complex theory) and is trivially equivalent to the empirical Arrhenius equation which are both readily derived from statistical thermodynamics in the kinetic theory of gases.〔Chapman & Enskog 1939〕 ==General form== The general form of the Eyring–Polanyi equation somewhat resembles the Arrhenius equation: $\backslash \; k\; =\; \backslash frac\backslash mathrm^\}$ where Δ''G''‡ is the Gibbs energy of activation, ''k''B is Boltzmann's constant, and ''h'' is Planck's constant. It can be rewritten as: $k\; =\; \backslash frac\; \backslash mathrm^\}\; \backslash mathrm^\}$ To find the linear form of the Eyring-Polanyi equation: $\backslash ln\; \backslash frac\; =\; \backslash frac\; \backslash cdot\; \backslash frac\; +\; \backslash ln\; \backslash frac\; +\; \backslash frac$ where: *$\backslash \; k$ = reaction rate constant *$\backslash \; T$ = absolute temperature *$\backslash \; \backslash Delta\; H^\backslash ddagger$ = enthalpy of activation *$\backslash \; R$ = gas constant *$\backslash \; k\_\backslash mathrm$ = Boltzmann constant *$\backslash \; h$ = Planck's constant *$\backslash \; \backslash Delta\; S^\backslash ddagger$ = entropy of activation A certain chemical reaction is performed at different temperatures and the reaction rate is determined. The plot of $\backslash \; \backslash ln(k/T)$ versus $\backslash \; 1/T$ gives a straight line with slope $\backslash \; -\backslash Delta\; H^\backslash ddagger\; /\; R$ from which the enthalpy of activation can be derived and with intercept $\backslash \; \backslash ln(k\_\backslash mathrm/h)\; +\; \backslash Delta\; S^\backslash ddagger\; /\; R$ from which the entropy of activation is derived. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Eyring equation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.