Phenolphthalein is an indicator that turns from colorless (acidic form) to magenta (basic form) and has...
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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Phenolphthalein is an indicator that turns from colorless
(acidic form) to magenta (basic form) and has...
24 Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH less tha...
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 has a pKapKa of 9.7 and is colorless in its acid form and pink in...
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)...
Addition of phenolphthalein to an unknown colorless solution does not cause a color change. The addition...
Addition of phenolphthalein to an unknown colorless solution does not cause a color change. The addition of bromthymol blue to the same solution leads to a yellow color. Is the solution acidic, neutral, or basic? Which of the following can you establish about the solution: What other indicator or indicators would you want to use to determine the pH of the solution more precisely?
Chloropropionic acid, CICH2CH2COOH is a weak monoprotic acid with Ka = 7.94 x 10-5 M. Calculate...
Chloropropionic acid, CICH2CH2COOH is a weak monoprotic acid with Ka = 7.94 x 10-5 M. Calculate the pH at the equivalence point in a titration 48.7 mL of 0.39 M chloropropionic acid with 0.7 M KOH. Answer: Indicators of Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH < 8.3) and pink in the basic form (pH > 10.0). It is a weak acid with a pka of 8.7. What is the ratio of the...
QUESTION 1 6 points Save Answer The purpose of an indicator in an acid-base titration is...
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...
B. The following questions are from today's experiment: EQUL 307: pH, Acids, and Bases Use the...
B. The following questions are from today's experiment: EQUL 307: pH, Acids, and Bases Use the table to answer your questions: 0.1 M solution Methyl orange Methyl Violet Phenolphthalein Thymolphthalein pH range 3.1 to 4.4 0.5 to 2.0 8.0 to 9.B 9.3 to 10.5 Color change red to yellow yellow to violet colorless to red colorless to blue yellow light pink colorless NaNO, кон violet violet yellow red blue 1. Is a 0.1 M solution of KOH acidic or basic?...
A certain indicator, HA, has a Ka value of 2.0 x107. The protonated form of the...
A certain indicator, HA, has a Ka value of 2.0 x107. The protonated form of the indicator is blue and the ionized form is yellow What is the pKa of the indicator? Number What is the color of this indicator in a solution with pH 5? O blue O yellow O green
A certain indicator, HA, has a K value of 1.6 x 10^-7. The protonated form of...
A certain indicator, HA, has a K value of 1.6 x 10^-7. The protonated form of the indicator is blue and the ionized form is yellow. What is the pKa of the indicator? What is the color of this indicator in a solution with pH = 9?
all 5&6 5.) Solid silver bromide , AgBr, can be dissolved by adding concentrated aqueous ammonia to give the water- soluble silver-ammonia complex ion. AgBr(s) + 2NH,(aq) U Ag(NH), (aq) + Br(a...
all 5&6
5.) Solid silver bromide , AgBr, can be dissolved by adding concentrated aqueous ammonia to give the water- soluble silver-ammonia complex ion. AgBr(s) + 2NH,(aq) U Ag(NH), (aq) + Br(aq) (a) Show that this equation is the sum of two other equations, one representing the dissolution of AgBr into its component ions and the other representing the formation of the silver-ammonium complex from silver ion and ammonia (b) Calculate the equilibrium constant for the above reaction K,(AgBr) =...
The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4. If...
The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4. If phenol is red added to a solution, and the solution turns red then A.) The solution is basic and the pH must be at or below 7.0. B.) The pH of the solution must be below 6.8, and the solution is basic. C.) The pH of the solution must be below 6.8, and the solution is acidic. D.) The pH of the solution must...
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...
Chloropropionic acid, CICH2CH2COOH is a weak monoprotic acid with Ka = 7.94 x 10-5 M. Calculate the pH at the equivalence point in a titration 48.7 mL of 0.39 M chloropropionic acid with 0.7 M KOH. Answer: Indicators of Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH < 8.3) and pink in the basic form (pH > 10.0). It is a weak acid with a pka of 8.7. What is the ratio of the...
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...
B. The following questions are from today's experiment: EQUL 307: pH, Acids, and Bases Use the table to answer your questions: 0.1 M solution Methyl orange Methyl Violet Phenolphthalein Thymolphthalein pH range 3.1 to 4.4 0.5 to 2.0 8.0 to 9.B 9.3 to 10.5 Color change red to yellow yellow to violet colorless to red colorless to blue yellow light pink colorless NaNO, кон violet violet yellow red blue 1. Is a 0.1 M solution of KOH acidic or basic?...
A certain indicator, HA, has a Ka value of 2.0 x107. The protonated form of the indicator is blue and the ionized form is yellow What is the pKa of the indicator? Number What is the color of this indicator in a solution with pH 5? O blue O yellow O green
A certain indicator, HA, has a K value of 1.6 x 10^-7. The protonated form of the indicator is blue and the ionized form is yellow. What is the pKa of the indicator? What is the color of this indicator in a solution with pH = 9?
all 5&6
5.) Solid silver bromide , AgBr, can be dissolved by adding concentrated aqueous ammonia to give the water- soluble silver-ammonia complex ion. AgBr(s) + 2NH,(aq) U Ag(NH), (aq) + Br(aq) (a) Show that this equation is the sum of two other equations, one representing the dissolution of AgBr into its component ions and the other representing the formation of the silver-ammonium complex from silver ion and ammonia (b) Calculate the equilibrium constant for the above reaction K,(AgBr) =...
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