Crystallization of sodium acetate

Hiegel, Gene A.

doi:10.1021/ed057p152.2

Cited by 4 publications

(3 citation statements)

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“…Typically, the students could familiarize themselves with the use of thermal cameras through the operation interface of their smartphone touchscreens in 10 min (e.g., changing color palettes or adjusting the temperature range). Then, the students were encouraged to observe the crystallization of a supersaturated solution of sodium acetate (NaOAc), one of the most fascinating demonstrations, − through their thermal cameras. Before the experiment, the supersaturated NaOAc solution was prepared by the instructor and transferred to culture dishes, which were covered with filter paper or inverted dishes.…”

Section: Experiments and Pedagogymentioning

confidence: 99%

Smartphone Visualization of Thermal Phenomena with Thermal Imaging Accessories

Wang

2019

J. Chem. Educ.

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Smartphone thermal cameras can be used to observe heat transfer or thermal patterns in crystallization, evaporation, mixing of liquids, and chemical reactions. The experiments described in this paper demonstrate that IR imaging can provide students with rich learning and exploring opportunities that would otherwise be infeasible or too time-consuming. The precision and sensitivity of smartphone thermal cameras are sufficient for use in chemistry education. A smartphone thermal imaging accessory is worth introducing into the teaching laboratory.

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Section: Experiments and Pedagogymentioning

confidence: 99%

Smartphone Visualization of Thermal Phenomena with Thermal Imaging Accessories

Wang

2019

J. Chem. Educ.

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“…Many hand warmers are based on crystallization of a supersaturated sodium acetate solution, which releases heat. Sodium acetate crystallization is well established as a teaching tool, with several articles and videos published in this Journal . − …”

Section: Sodium Acetate Hand Warmersmentioning

confidence: 99%

The Five Senses of Christmas Chemistry

Jackson

Dicks

2012

J. Chem. Educ.

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This article describes the organic chemistry of five compounds that are directly associated with the Christmas season. These substances and related materials are presented within the framework of the five senses: silver fulminate (sound), α-pinene (sight), sodium acetate (touch), tryptophan (taste), and gingerol (smell). Connections with the introductory organic curriculum are emphasized throughout to illustrate how the following lecture topics can be reviewed or introduced each November and December: Lewis structures, resonance theory, constitutional isomers, stereoisomers, cycloalkane ring conformations, thermodynamics, acids and bases, nucleophiles and electrophiles, carbonyl condensation reaction mechanisms, and functional group transformations.

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“…An eye-catching demonstration involving crystallization from a supersaturated solution uses the sodium acetate-water system (1)(2)(3)(4). A supersaturated aqueous solution of sodium acetate will keep indefinitely, but when it comes in contact with even a tiny crystal of the salt, it starts crystallizing and soon the whole liquid turns to a solid.…”

mentioning

confidence: 99%