H
-1.5
pH Meter
acid catalysed hydrolysis of lactone linkage
pH
8.3-10
Orange solution
animation of mechanism
+
pH
<-1
stdobbs.com
pH
0-8.3
pH
>10
Colourless solution
7.0
pH Meter
acid catalysed hydrolysis of ester linkage
-
8.8
pH Meter
Pink solution
dissociation of protons from phenol groups
10.8
pH Meter
OH
base catalysed hydrolysis of lactone linkage
Kus2014, CC BY-SA 4.0, via Wikimedia Commons
take a look…
Phenolphthalein.
Four species at different pH
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