If you were titrating using methyl Orange and phenolphthalein as the indicators for Na2CO3. if you used...
If you were titrating using methyl Orange and phenolphthalein as the indicators for Na2CO3. if you used NaHSO4 instead of Na2CO3, would you need to use two indicators for titration? Why or why not?
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If you were titrating using methyl Orange and phenolphthalein as
the indicators for Na2CO3. if you used...
Phenolphthalein is used in titrating KHP with NaOH. Why? Is phenolphthalein required for a potentiometric titration...
Phenolphthalein is used in titrating KHP with NaOH. Why? Is phenolphthalein required for a potentiometric titration of a weak acid with NaOH? Why or why not?
In a titration using methyl orange as an indicator 25.0 cm of a solution of 0.1...
In a titration using methyl orange as an indicator 25.0 cm of a solution of 0.1 M sodium hydroxide reacted with 25.0 cm of 0.1 M phosphoric acid, H3PO4, solution. If the experiment is repeated using phenolphthalein in place of the methyl orange as the indicator the volume of the sodium hydroxide used to cause the indicator to change colour is 50.0 cm'. This is because phenolphthalein changes colour when a different number of hydrogen ions in the acid have...
The titration shown here has an equivalence point at pH = 4.3. Using this table, identify...
The titration shown here has an equivalence point at pH = 4.3. Using this table, identify which of the following indicators would be appropriate for this titration. Check all that apply. ethyl orange methyl orange bromocresol purple bromothymol blue bromophenol blue phenolphthalein
Based on your endpoint indicated by the methyl orange and the equivalence points determined by the...
Based on your endpoint indicated by the methyl orange and the equivalence points determined by the titration curve for your Na2CO3 titration using the pH electrode, which of the following are true? (Select all that apply.) The methyl orange was not necessary since the pH change indicated the second equivalence point. The methyl orange was not necessary since the pH change indicated the first equivalence point. The endpoint and the second equivalence point occurred together. The endpoint and the first...
4. Two 0.100 M solutions of the weak acids HA and HB are titrated using KOH...
4. Two 0.100 M solutions of the weak acids HA and HB are titrated using KOH at 25°C. The pH at equivalence of HA is 8.5, while the pH at equivalence of HB is 10.3. 1. Which of these two acids is weaker? ii. Which of the indicators below would be suitable in the titration of HA? Which would be suitable in the titration of HB? Indicator Alizarin yellow GR phenolphthalein methyl orange methyl red bromothymol blue pH range for...
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
I just need help with the calculations for table 4! Laboratory Experiments 177 Perform an additional...
I just need help with the calculations for table 4!
Laboratory Experiments 177 Perform an additional titration as in Part I, except use 3 drops of methy! red indicator instead of the phenolphthalein indicator. Record your data in Table 3 PART 2 PROCEDURE 2. Perform an additional titration as in Part 1, except use 3 drops of the phenolphthalein indicator. veto-…sc Record your data in Table 3. orontimol yellow TABLE3 Titration Data for Different Indicators, Part 2 Phenolphthalein indicator (already...
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...
A volume of 20.05 mL of NaOH was used to titrate a 0.45 g sample of...
A volume of 20.05 mL of NaOH was used to titrate a 0.45 g sample of potassium hydrogen phthalate (KHP), a monoprotic acid, which has a molecular weight of 204.2 g/mol. Calculate the molarity of the NaOH solution. For the above titration of potassium hydrogen phthalate with NaOH, if you have the following pH indicators: methyl red, bromothymol blue, and phenolphthalein, which indicator should you use? Explain why.
For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2
For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2....the problem is that if I don't boil it for that long and (30 min) b/c of not enough time but I put the water I boiled for 1/2 hr aproximately into a NaOH bottle with a CO2 absorber and stored it there for a few days. I would assume that I would have to boil the water again...but...
In a titration using methyl orange as an indicator 25.0 cm of a solution of 0.1 M sodium hydroxide reacted with 25.0 cm of 0.1 M phosphoric acid, H3PO4, solution. If the experiment is repeated using phenolphthalein in place of the methyl orange as the indicator the volume of the sodium hydroxide used to cause the indicator to change colour is 50.0 cm'. This is because phenolphthalein changes colour when a different number of hydrogen ions in the acid have...
The titration shown here has an equivalence point at pH = 4.3. Using this table, identify which of the following indicators would be appropriate for this titration. Check all that apply. ethyl orange methyl orange bromocresol purple bromothymol blue bromophenol blue phenolphthalein
4. Two 0.100 M solutions of the weak acids HA and HB are titrated using KOH at 25°C. The pH at equivalence of HA is 8.5, while the pH at equivalence of HB is 10.3. 1. Which of these two acids is weaker? ii. Which of the indicators below would be suitable in the titration of HA? Which would be suitable in the titration of HB? Indicator Alizarin yellow GR phenolphthalein methyl orange methyl red bromothymol blue pH range for...
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
I just need help with the calculations for table 4!
Laboratory Experiments 177 Perform an additional titration as in Part I, except use 3 drops of methy! red indicator instead of the phenolphthalein indicator. Record your data in Table 3 PART 2 PROCEDURE 2. Perform an additional titration as in Part 1, except use 3 drops of the phenolphthalein indicator. veto-…sc Record your data in Table 3. orontimol yellow TABLE3 Titration Data for Different Indicators, Part 2 Phenolphthalein indicator (already...
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...
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