University Chemistry ›› 2016, Vol. 31 ›› Issue (4): 80-82.doi: 10.3866/PKU.DXHX20160480

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Can Iron Powder React with Chlorine to Produce Iron(Ⅱ) Dichloride?

Jia-Juan SUN,Guang FAN*(),Yin-Li ZHANG,Zhan-Ying MA,Feng-Qin GAO,Wei-Xia XU   

  • Published:2016-05-06
  • Contact: Guang FAN
  • Supported by:


In this article, the reason that the iron powder reacts with chlorine to produce iron(Ⅲ) trichloride under appropriate conditions is explained according to fundamentals of chemical thermodynamics. And the calculation result from Gibbs-Helmholtz equation reveals that the iron powder can react with chlorine to produce iron(Ⅱ) dichloride at the temperature higher than 626 K. The calculation can not only reflect the guidance of chemical thermodynamics on inorganic synthesis, but also enhance students' ability to comprehend and apply chemical thermodynamics basic knowledge.

Key words: Chemical thermodynamics, Iron dichloride, Iron trichloride, Gibbs-Helmholtz equation


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