Chemical Forums
Chemistry Forums for Students => High School Chemistry Forum => Topic started by: born2dive00 on January 06, 2021, 09:37:55 AM
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So I am looking for a table of the water dissociation constant that is detailed with a .5'F separation, with a pH range of 1 to 14, with a .01 ph resolution or better
The closest thing I can find is tables with a 5 degree C separation, and a .1 does such a table exist?
If not can someone lead me down the right path for finding the formula, I believe that uses temperature, pressure to calculate the values...
Please let me know and thank you.
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The closest thing I can find is tables with a 5 degree C separation, and a .1 does such a table exist?
If you plot what you have, is it well defined?
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The charting is not an issue, im trying to develop a pH calculator with an accuracy of +/- .5mg per liter. With a pH accuracy of .001
The problem is the water dissassociation constant is reaking havoc due to both the temp and pressure when substance is very dilute. A change of 5 degrees C is equating to between .03 and .12 variance on the calculation depending on the solution temp and atmospheric pressure, hence I need a much more refined table, or need to know how to get the Kw dissassociation from the temp and pressure.
Any ideas?
The closest thing I can find is tables with a 5 degree C separation, and a .1 does such a table exist?
If you plot what you have, is it well defined?