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The indicator congo red is at pH = 1 and red at pH...
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...
The following graph shows the pH curve for the titration of 25 mL of a 0.1...
The following graph shows the pH curve for the titration of 25
mL of a 0.1 M monoprotic acid solution with a 0.1 M solution of a
monoprotic base.
mL of 0.1 M base added
(1) The pH curve represents the titration of a
_______(weak/strong) acid with a _______(weak/strong)base.
(2) Choose a suitable indicator for the endpoint
of the titration from the following pulldown list
__________.(bromocresol green / methyl red / bromothymol blue /
cresol red / thymol blue /...
PLEASE EXPLAIN THE ANSWER Alizarin yel 16.16 If the pH is 8.0 at the equivalence point...
PLEASE EXPLAIN THE ANSWER
Alizarin yel 16.16 If the pH is 8.0 at the equivalence point for the titration of a certain weak acid with sodium hydroxide, what indicator might you use? (See Figure 15.10.) pH range for color change Indicator name H ii + + 0 Methyl violet yellow violet Thymol blue (acidic range) red yellow Bromphenol blue yellow blue Methyl orange red yellow Bromcresol green yellow blue Methyl red rad yellow • yellow blue Brumthymol blue Thymol blue...
Explain which of the following indicators would be appropriate for a strong acid-strong base titration? Indicator...
Explain which of the following indicators would be appropriate for a strong acid-strong base titration? Indicator pH of color change Bromphenol blue 3.0 - 4.6 Bromothymol blue 6.0 - 7.6 Phenolphthalein 8.0 - 9.6
Suppose that you wish to titrate formic acid (CH3OH, a weak acid) with potassium hydroxide (a...
Suppose that you wish to titrate formic acid (CH3OH, a weak acid) with potassium hydroxide (a strong base). From the list below, which would be the best indicator to use for this titration? Name of Indicator pH Range Methyl Yellow 2.9 - 4.0 Methyl Orange 2.5 - 4.4 Congo Red 3.0 - 5.0 Phenolphthalein 8.3 - 10.0
Answer should discuss how buffering action occurs and affects the pH of a titration before and af...
Answer should discuss how buffering action occurs and affects
the pH of a titration before and after equivalence point. Also
discuss how this affects the pH of equivalence point, with the rate
of pH changes, relating to effectiveness of indicator. Also the
potential accuracy of an indicator in a system !
7. Explain why the titration curve for the titration of a weak base with a weak acid is both difficult to calculate changes in value near the equivalence point,...
Explain and write neatly please The data for the table was found by looking at these...
Explain and write neatly please
The data for the table was found by looking at these 4
graphs.
Answer 5a&b, 8a&b, and 9 please.
Table 1 - Equivalence Point and Indicator Color Change Time of Indicator Color Time at Equivalence pH at the Change(sec) Point (sec) Equivalence Point 140 140 7.5 165 165 8.6 Initial pH Final pH 11.8 Acid-Base Combination HCI + NaOH HC,H,O + NaOH HCI + NH OH HC,H,O + NH,OH 1 3.9 12 140 140 5.0...
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...
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
15. A 66 mL sample of a solution of sulfuric acid, H,SO, is neutralized by 34...
15. A 66 mL sample of a solution of sulfuric acid, H,SO, is neutralized by 34 mL of a 0.13 M sodium hydroxide solution. Calculate the molarity of the sulfuric acid solution 16. If 300 mL of 3.9 M HCl is added to 400 mL of 2.9 M NaOH, what is the pH? 17. If 287 mL of 4.7 M HCl solution is added to 284 mL of 3.2 M Ba(OH), solution, what will the pH be? 18. What 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...
The following graph shows the pH curve for the titration of 25
mL of a 0.1 M monoprotic acid solution with a 0.1 M solution of a
monoprotic base.
mL of 0.1 M base added
(1) The pH curve represents the titration of a
_______(weak/strong) acid with a _______(weak/strong)base.
(2) Choose a suitable indicator for the endpoint
of the titration from the following pulldown list
__________.(bromocresol green / methyl red / bromothymol blue /
cresol red / thymol blue /...
PLEASE EXPLAIN THE ANSWER
Alizarin yel 16.16 If the pH is 8.0 at the equivalence point for the titration of a certain weak acid with sodium hydroxide, what indicator might you use? (See Figure 15.10.) pH range for color change Indicator name H ii + + 0 Methyl violet yellow violet Thymol blue (acidic range) red yellow Bromphenol blue yellow blue Methyl orange red yellow Bromcresol green yellow blue Methyl red rad yellow • yellow blue Brumthymol blue Thymol blue...
Answer should discuss how buffering action occurs and affects
the pH of a titration before and after equivalence point. Also
discuss how this affects the pH of equivalence point, with the rate
of pH changes, relating to effectiveness of indicator. Also the
potential accuracy of an indicator in a system !
7. Explain why the titration curve for the titration of a weak base with a weak acid is both difficult to calculate changes in value near the equivalence point,...
Explain and write neatly please
The data for the table was found by looking at these 4
graphs.
Answer 5a&b, 8a&b, and 9 please.
Table 1 - Equivalence Point and Indicator Color Change Time of Indicator Color Time at Equivalence pH at the Change(sec) Point (sec) Equivalence Point 140 140 7.5 165 165 8.6 Initial pH Final pH 11.8 Acid-Base Combination HCI + NaOH HC,H,O + NaOH HCI + NH OH HC,H,O + NH,OH 1 3.9 12 140 140 5.0...
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
15. A 66 mL sample of a solution of sulfuric acid, H,SO, is neutralized by 34 mL of a 0.13 M sodium hydroxide solution. Calculate the molarity of the sulfuric acid solution 16. If 300 mL of 3.9 M HCl is added to 400 mL of 2.9 M NaOH, what is the pH? 17. If 287 mL of 4.7 M HCl solution is added to 284 mL of 3.2 M Ba(OH), solution, what will the pH be? 18. What is...
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