6.21.1: Lecture Demonstrations

Add small pieces of Li, K, Na to water, with universal indicator if desired, to show relative activities.

Hazards: K forms a peroxide coating that may explode when cut with a knife.

Activities of the Halogens^[1][2][3][4]

Displace I, Br from NaI and NaBr solutions with Cl₂ (extract halogens into nonpolar solvent like hexane to make them more visible)^[5].

Show that I₂ does not displace Cl₂ from NaCl, etc.

Reaction of Antimony with Halogens ^[6]

References

1. ↑ Furse, A. J. Chem. Educ., 1947, 24 (9), p 445
2. ↑ J. Chem. Educ., 1969, 46 (2), p A108
3. ↑ Alyea, H. J. Chem. Educ., 1969, 46 (2), p A108
4. ↑ J. Chem. Educ., 1933, 10 (10), p 637
5. ↑ J. Chem. Educ., 1969, 46 (2), p A108
6. ↑ J. Chem. Educ., 1969, 46 (2), p A108

Contributors and Attributions

• 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.