How do you find the acid dissociation constant of plant pigments ??

Subject: How do you find the acid dissociation constant of plant pigments ??

Date: Fri Jan 21 06:45:39 2000
Posted by Sue
Grade level: 10-12 School: No school entered.
City: No city entered. State/Province: No state entered. Country: England
Area of science: Chemistry
ID: 948458739.Ch

Message:


I understand that plant pigments such as anthocyanins changes colour 
depending on its pH. I would like to know if it is possible to find the 
acid dissociation constant using a colourimeter knowing that the absorbance 
of the colourimeter is proportional to the concentration of the pigment in 
solution.

Re: How do you find the acid dissociation constant of plant pigments ??

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