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calculation tables, graphs, calculations and
2. Clearly indicate in your report the value of
the equilibrium constant of BCG, Ka, and how
you calculated it. Ka can be found from the yintercept (B):
B = log (Ka)
Ka = 10B
3. When we calculate the pH of the solutions
it’s found by using the following equation: pH=pK+log (moles sodium acetate )
(moles acetic acid) Bromocresol green is a weak acid, just like
acetic acid. But our calculations assume that
bromocresol green doesn’t affect the overall acidity (pH) of the acetate solution. Why is this a good
assumption? To prove this point, calculate the number of moles of bromocresol green (the indicator
itself) in the sodium acetate solution and compare this number to the number of moles of sodium acetate
and the number of moles of acetic acid used.
4. Type a discussion of your primary result. Compare your result to literature values. Discuss the
accuracy of your result. Be sure to list the sources of your literature values. Department of Physical Sciences Kingsborough Community College The City University of New York Spring 2012
Experiment 6: Determination of the Equilibrium Constant for Bromocresol Green 12...
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