Phenol red is an indicator that changes color over a range from pH=6.4 to pH=8.0. What...
Phenol red is an indicator that changes color over a range from pH=6.4 to pH=8.0. What is Ka of phenol red?
Homework Answers
In this question we have to given
pH range 6.4 to 8.0
we have to find Ka of Phenol red.
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Phenol red is an indicator that changes color over a range from
pH=6.4 to pH=8.0. What...
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...
Universal indicator is a solution which contains several acid base indicators and provided sufficient color changes to estimate pH over a wide range. One such indicator contains a mixture of thymol bl...
Universal indicator is a solution which contains several acid base indicators and provided sufficient color changes to estimate pH over a wide range. One such indicator contains a mixture of thymol blue, phenolphthalein, and methl orange. Determine the color of this indicator at a) pH=1.5, b) pH=4, c) pH 6.5, d) pH=9, and e) pH=11.5. Explain reasoning.
Phenol red is another indicator commonly used to detect the presence of acid. This indicator is...
Phenol red is another indicator commonly used to detect the presence of acid. This indicator is red above pH7 and yellow below pH of 7. What would be the appearance of E. coli (gram negative rod, lactose fermenter) and S. aureus (gram positive cocci, lactose fermenter) if neutral red in MacConkey agar was replaced with phenol red?
How could these byproducts affect phenol red (a pH indicator), and subsequently make a media selective/differential?...
How could these byproducts affect phenol red (a pH indicator), and subsequently make a media selective/differential? (for bacteria /microbes). How phenol red work in a media ?
Table 2: Indicator, pH Range, and Color Change Beaker Indicator Amount Needed for Reaction to Complete...
Table 2: Indicator, pH Range, and Color Change Beaker Indicator Amount Needed for Reaction to Complete pH Range pH at Color Change Color (Initial:Final) 1 Bromothymol Blue 6 6.0-7.5 6.6 Blue > Light Yellow 2 Turmeric Indicator 6 7.5-8.8 5.3 Light Red > Yellow 3 Methyl Orange 20 2.3-4.6 7.9 Orange > Pink Table 3: Titration Data Part 2: mL Citric Acid Added Part 2: pH Part 3: mL Citric Acid Added Part 3: pH Part 3: Color 0.0 10.5...
The calmagite indicator changes from a pink to a blue color during the titration. Describe why...
The calmagite indicator changes from a pink to a blue color during the titration. Describe why the color change occurs. This question is part of the experiment "determination of water hardness", and you should answer the question based on the following background information(abstract information and you can get the answer). In this titration Calmagite is used an indicator for both calcium and magnesium. The equation below shows the competition reaction between the calmagite indicator (In) and EDTA for Mg and...
Choose the right answer The indicator chart provided below for question 12. Indicator color chart showing...
Choose the right answer
The indicator chart provided below for question 12. Indicator color chart showing the pH ranges where various indicators change colors. What indicator would be useful if you were titrating a sample of weak base with a strong acid, such that the pH at the equivalence point was expected to be approximately 5.5? a. methyl orange b. methyl red c. phenol red d. phenolphthalein
3. Methyl red is an indicator that changes between red and yellow. In solution methyl red...
3. Methyl red is an indicator that changes between red and yellow. In solution methyl red (HMR) dissociates as follows: HMR red H'(g) + MR (ac) yellow If acid is added to the solution which way do you expect the equilibrium to shift? What color would the indicator be? Explain your conclusion: If base is added to the solution which way do you expect the equilibrium to shift? What color would the indicator be? Explain your conclusion:
For each of the solutions described below, determine the pH range for the solution using the...
For each of the solutions described below, determine the pH range for the solution using the information given and the indicator chart Solution A Indicator Used alizarin yellow Indicator color Yellow bromthymol blue yellow methyl violet violet Range bear the 21 less than 7.6 leathen lib really them 5.1 Gooher the 3.2 bromcresol green green methyl red red The pH range for solution A is 3.2 7.6 Solution B Indicator Used methyl red Indicator color yellow Range leroth 67 alizarin...
Indicator Color PH Narrow eangeAcidic Basic oR Bromo-papeR thymef NeutRal Alizarin Phenol HJ -पd yellow R Phenol Me...
Indicator Color PH Narrow eangeAcidic Basic oR Bromo-papeR thymef NeutRal Alizarin Phenol HJ -पd yellow R Phenol MethpeMethyl Solution par pau ahr H20 (unboiled)5,0 5.5 Acidic Acidic Aeidic Basic Aciate 3 5.5 (paoq) 0'H O'9 NaCl O'h NaC,H,02 O'8 D'HN O'0 O'h ZnCl2 Acidic 0 Acidic Na2CO3 ja.5 Basic Color key: org- orange;-colorless; yell- yellow.
Choose the right answer
The indicator chart provided below for question 12. Indicator color chart showing the pH ranges where various indicators change colors. What indicator would be useful if you were titrating a sample of weak base with a strong acid, such that the pH at the equivalence point was expected to be approximately 5.5? a. methyl orange b. methyl red c. phenol red d. phenolphthalein
3. Methyl red is an indicator that changes between red and yellow. In solution methyl red (HMR) dissociates as follows: HMR red H'(g) + MR (ac) yellow If acid is added to the solution which way do you expect the equilibrium to shift? What color would the indicator be? Explain your conclusion: If base is added to the solution which way do you expect the equilibrium to shift? What color would the indicator be? Explain your conclusion:
For each of the solutions described below, determine the pH range for the solution using the information given and the indicator chart Solution A Indicator Used alizarin yellow Indicator color Yellow bromthymol blue yellow methyl violet violet Range bear the 21 less than 7.6 leathen lib really them 5.1 Gooher the 3.2 bromcresol green green methyl red red The pH range for solution A is 3.2 7.6 Solution B Indicator Used methyl red Indicator color yellow Range leroth 67 alizarin...
Indicator Color PH Narrow eangeAcidic Basic oR Bromo-papeR thymef NeutRal Alizarin Phenol HJ -पd yellow R Phenol MethpeMethyl Solution par pau ahr H20 (unboiled)5,0 5.5 Acidic Acidic Aeidic Basic Aciate 3 5.5 (paoq) 0'H O'9 NaCl O'h NaC,H,02 O'8 D'HN O'0 O'h ZnCl2 Acidic 0 Acidic Na2CO3 ja.5 Basic Color key: org- orange;-colorless; yell- yellow.
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