Phenolphthalein has a pKapKa of 9.7 and is colorless in its acid form and pink in its basic form.
a) For pH=pH= 2.0 calculate [In−]/[HIn][In−]/[HIn].
Express your answer using two significant figures.
b)
Predict the color of a phenolphthalein solution.
Predict the color of a phenolphthalein solution.
colorless |
pink |
c) For pH=pH= 5.1 calculate [In−]/[HIn][In−]/[HIn].
Express your answer using two significant figures.
d) Predict the color of a phenolphthalein solution.
Predict the color of a phenolphthalein solution.
colorless |
pink |
e) For pH=pH= 8.3 calculate [In−]/[HIn][In−]/[HIn].
Express your answer using two significant figures.
f) Predict the color of a phenolphthalein solution.
Predict the color of a phenolphthalein solution.
colorless |
pink |
g) For pH=pH= 11.3 calculate [In−]/[HIn][In−]/[HIn].
Express your answer using two significant figures.
h) Predict the color of a phenolphthalein solution.
Predict the color of a phenolphthalein solution.
colorless |
pink |
Phenolphthalein has a pKapKa of 9.7 and is colorless in its acid form and pink in...
Show all work and steps please 24 Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH less than 8 3) and pink in the base form (pH greater than 100) It is a weak acid with a pka of 8.7. What fraction is in the acid form when the ocid color is apparent? What fraction is in the base form when the base color is apparent? 24 Phenolphthalein is a commonly used indicator that is...
Phenolphthalein is an indicator that turns from colorless (acidic form) to magenta (basic form) and has a pKa of 9.40. What is the ratio of the magenta phenolphthalein concentration to the colorless phenolphthalein concentration ([magenta phenolphthalein]/[colorless phenolphthalein]) at a pH of 10.9?
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QUESTION 1 6 points Save Answer The purpose of an indicator in an acid-base titration is to indicate the of the titration. Use Table 10.2 for the following question. If an acidic solution is titrated with a basic solution and methyl violet is used as an indicator, the solution color will change from to QUESTION 2 3 points Save Answer The molarity of a solution prepared by dissolving 17.0 g of hydrochloric acid (HCI (aq) in 133 mL of water...
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