Caption
A chemical clock (or clock reaction) is a complex mixture of reacting chemical compounds in which the onset of an observable property occurs after a predictable induction time. In cases where one of the reagents has a visible color, crossing a concentration threshold can lead to an abrupt color change after a reproducible time lapse. One class of example is the iodine clock reactions, in which an iodine species is mixed with redox reagents in the presence of starch. After a delay, a dark blue color suddenly appears due to the formation of a triiodide-starch complex., 10835575
Aufnahmedatum
27.04.2018
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Ron Giling/Lineair / FOTOFINDER.COM
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RG27042018-AN3A4350-Lineair
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6720px x 4480px, 56,90 cm x 37,90 cm (300 dpi)
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Not specified
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10835575
Stichworte Stichworte
blue color
, blue color
, change
, change
, chemical clock
, chemical clock
, chemistry
, chemistry
, clock reaction
, clock reaction
, clock reactions
, clock reactions
, color
, color
, iodine
, iodine
, reagents
, reagents
, time
, time
, time lapse
, time lapse
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