大学化学 >> 2018, Vol. 33 >> Issue (6): 65-70.doi: 10.3866/PKU.DXHX201712045

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物理化学中关于n级反应及其半衰期的讨论

李作鹏1,尚建鹏1,武美霞1,苏彩娜1,郭子英1,张三兵2,郭永1,*()   

  1. 1 山西大同大学化学与环境工程学院, 山西 大同 037009
    2 中国农业大学理学院应用化学系, 北京 100193
  • 收稿日期:2017-12-29 发布日期:2018-06-01
  • 通讯作者: 郭永 E-mail:ybsy_guo@163.com
  • 基金资助:
    国家自然基金(21073113);山西省自然基金(201701D121016);山西大同大学校级教改项目(XJ2014)

Discussion on the nth Order Reaction and Its Half-Life in Physical Chemistry

Zuopeng LI1,Jianpeng SHANG1,Meixia WU1,Caina SU1,Ziying GUO1,Sanbing ZHANG2,Yong GUO1,*()   

  1. 1 School of Chemistry and Environmental Engineering, Shanxi Datong University, Datong 037009, Shanxi Province, P. R. China
    2 Department of Applied Chemistry, College of Sciences, China Agricultural University, Beijing 100193, P. R. China
  • Received:2017-12-29 Published:2018-06-01
  • Contact: Yong GUO E-mail:ybsy_guo@163.com
  • Supported by:
    国家自然基金(21073113);山西省自然基金(201701D121016);山西大同大学校级教改项目(XJ2014)

摘要:

相对于积分法和微分法,由半衰期法确定反应级数的方法具有更高的可靠性和普适性。但教科书上由n级反应推导半衰期的过程却较为模糊。本文通过四种不同的方法详细探讨了n级反应及其半衰期的推导过程,有利于学生加深对n级反应及其半衰期推导过程的认识。

关键词: n级反应, 半衰期, 微分式, 积分式, 推导

Abstract:

Comparing with integral and differential means, the half-life mean derived from nth order reaction to confirm reaction order is more reliable and universal. However, the derivation processes in textbooks are not clear. In this paper, we discussed the derivation processes of nth order reaction and its half-life in details using four different ways. It is beneficial for students to deepen the understanding of derivation processes about nth order reaction and its half-life.

Key words: nth order reaction, Half-life, Differential form, Integral form, Derivation

MSC2000: 

  • G64