Google Answers: protonated Chlorophyll-a and affects on absorption spectrum

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Q: protonated Chlorophyll-a and affects on absorption spectrum ( No Answer, 0 Comments )

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Subject: protonated Chlorophyll-a and affects on absorption spectrum
Category: Science > Chemistry
Asked by: stepy-ga
List Price: $20.00

Posted: 17 Nov 2002 17:36 PST
Expires: 17 Dec 2002 17:36 PST
Question ID: 109573

For a lab I added NAOH to chlorophyll-a and the aborpation spectrum
was not changed.  When the solution was changed to acidic by adding
HCL the spectrum did change.  There no longer was a spectrum at 650 to
700.  I believe that this was a result of chlotophyll-a being
protonated but I do not know where it was protonated.  My question is
where was chlorophyll-a protonated and why did this result in the
spectrum change?

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