A Student-Made Silver-Silver Chloride Reference Electrode for the General Chemistry Laboratory: similar to 10 min Preparation

作者：Barlag Rebecca^*; Nyasulu Frazier; Starr Rachel; Silverman Jenna; Arthasery Phyllis; McMills Lauren

来源：Journal of Chemical Education, 2014, 91(5): 766-768.

DOI：10.1021/ed400722e

• First-Year Undergraduate/General
• Laboratory Instruction
• Physical Chemistry
• Hands-On Learning/Manipulatives
• Electrochemistry
• Electrolytic/Galvanic Cells/Potentials
• Laboratory Equipment/Apparatus

A student-prepared silver silver chloride reference electrode is described. The chemical deposition of AgCl(s) onto Ag(s) is accomplished in 30-50 s by placement of a Ag(s) wire in laundry bleach. An autopipettor tip with an agarose gel plug serves as the electrode housing; the agarose gel contains predissolved KNO3. Reference electrode preparation is completed in about 10 min, allowing enough time for laboratory exercises that utilize the electrode. Preparation and operation of the electrode and recovery of the Ag(s) are designed to teach a number of important chemistry principles.

• 出版日期2014-5