We created a buret correction graph for titration lab and then we titrated a
solution. Now we are trying to figure out the actual amounts dispensed to
figure out the precentage of the unknown weak acid. I have the buret
correction graph and I need to use the actual correction amounts when doing
the equations to figure the precentages. The reason i wanted the x,y
coordinates was because our graph has the data points at 10, 20, 30 mL and so
for forth but the actual amounts that were needed for the titration were not
those exact amounts. So I need to know exactly how much to use for the
correction amount at the point of the line that corresponds to the amount
that we used for each titration. If I brake the graph up into sections I can
use the equation of each slope (the line from 0-10, 0-20, etc.) but it would
just be a lot nicer to have the computer do it for me so then I could plug
the numbers into the equation that I need. I am pretty sure I have seen it
done but I can't seem to get it to work for me.
I hope that makes sense.
Thanks for any thoughts you might have on this dilema!
Crystal :-)

"Bernard Liengme" wrote:

As a retired chemistry prof I cannot think why you would want to do this. I
think you need to find the equation of the line and compute y for some given
x, or x for some given y. Please tell us more about the project.
best wishes
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"Smylegirl" wrote in message
...
Hi,
I have a graph of some data points and I was pretty sure that I should be
able to run my mouse along the line and wherever I stopped it would show
me
the x,y coordinates. But instead I just get (series 1, 10) or something
as
unhelpful as that depending on there I am on the line.
I really need this data for a chemistry lab I am doing and I would
appreciate any help possible.
Thank you.