Solution containing a small concentration of ha is green., Ask an Expert

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Bromothymol blue, HA, is an indicator of intense blue and yellow color at pH's substantially higher and lower than it's pKa value of 7.6. A pH = 7.6 solution containing a small concentration of HA is green. What color change do you expect when you dilute this solution with an equal volume of distilled water?

a) The new solution will have the same green color.
b) The new solution will be lighter green color.
c) The new solution will be blue-green.
d) The new solution will be yellow-green.

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