The Vespiary

The Hive => Chemistry Discourse => Topic started by: Elementary on June 13, 2002, 07:31:00 PM

Title: Test For Ozone
Post by: Elementary on June 13, 2002, 07:31:00 PM: I need a chemical test for ozone, can anybee help ?
John Lennon - Working Class Hero
Title: Smell maybe?
Post by: acid_egg on June 13, 2002, 07:59:00 PM: Smell maybe?
(rated as:eggsellent)
Title: More specific
Post by: PrimoPyro on June 13, 2002, 08:16:00 PM: What are you testing for exactly? The mere presence of ozone gas, as in trioxygen/O3?

PrimoPyro
Title: Also
Post by: acid_egg on June 13, 2002, 08:20:00 PM: The presence of ozone may be ascertained by its smell, and by the fact that it liberates iodine from potassium iodide KI. A solution of potassium iodide is added to a few grains of starch dissolved in water, and in this paper is soaked, which then forms ozone test paper, which turns blue when exposed to ozone or ozonised air. The ozone liberates iodine from the potassium iodide, and the starch combines with the liberated iodine, forming a blue compound.

Extract from
http://www.ntu.edu.au/education/wardonli.htm (http://www.ntu.edu.au/education/wardonli.htm)

Edit Note the title ;D ;)

(rated as:eggsellent)
Title: Ozone Sensors
Post by: PrimoPyro on June 13, 2002, 08:25:00 PM: Im sure one can buy ozone sensors.

You could also use a sacrificial alkene as a test subject as the ozone makes the olefin undergo ozonolysis to the carbonyl compounds which could be verified easily, because you would know what the alkene, and hence the carbonyl compounds, would be.

PrimoPyro
Title: Reason
Post by: Elementary on June 13, 2002, 10:19:00 PM: The reason I need to detect ozone is to detect the completion of ozone absorbtion in styrene dimer, see
Post 320196 (https://www.thevespiary.org/talk/index.php?topic=11965.msg32019600#msg32019600)
(Elementary: "Styrene > Hydratropic Aldehyde", Novel Discourse)

Maybe the smell of ozone will be good enough
John Lennon - Working Class Hero