6.11.1: Lecture Demonstrations

Conductivity of Molten Salt

Many salts can be melted in test tubes, and the conductivity of their melts measured with a low voltage device and either graphite "leads" from pencils, or TIG welding rods^[1].

Conductivity of Salt Solutions

Compare solution conductivity of ionic and covalent compounds^[2]. Besides the traditional 120 V light bulb with probes in series (available from scientific suppliers), many conductivity devices have been suggested.^[3][4][5][6]

References

1. J. Chem. Educ., 2001, 78 (8), p 1052
2. J. Chem. Educ., 1962, 39 (10), p 531
3. Daniel T. Haworth , Mark R. Bartelt and Michael J. Kenney , Reed Howald. J. Chem. Educ., 1999, 76 (5), p 625
4. J. Chem. Educ., 1995, 72 (8), p 728
5. J. Chem. Educ., 1987, 64 (7), p 628
6. John W. Havrilla. J. Chem. Educ., 1991, 68 (1), p 80

Contributors

• Ed Vitz (Kutztown University), John W. Moore (UW-Madison), Justin Shorb (Hope College), Xavier Prat-Resina (University of Minnesota Rochester), Tim Wendorff, and Adam Hahn.