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![A CH₃NH2 ci formed at egnivalence point which is by drolyzed. 2- [CH3NH₂ a] = 0.10 = 0.05 (M) using. 2 L pH = + (6 kw - Pro-l](http://img.homeworklib.com/questions/24c830d0-1675-11ea-adbe-a3381fe2df98.png?x-oss-process=image/resize,w_560)
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Be sure to answer all parts. Use the figure below to find an indicator for these titrations: (a) 0.10 M CH3NH2(Kb = 4.4...
Be sure to answer all parts. Use the figure below to find an indicator for these...
Be sure to answer all parts. Use the figure below to find an indicator for these titrations: (a) 0.10 M CH3NH2( Kb = 4.4 x 10-4 ) with 0.10 M HCI (select) (b) 0.50 MHI with 0.10 M KOH (select) 234S6 781011 12 13 14 Crystal violet Thymol blue Bromophenol blue Methyl ned Allzarin Bromodhymol blue Phenol red Allzarin yelow R
15. Which mixture would be the best butter? a. 1 M HF; 0.01 MF d. 0.1...
15. Which mixture would be the best butter? a. 1 M HF; 0.01 MF d. 0.1 M HC2H3O2; 0.01 M C2H302 b. 2 M HCI; 0.5 M CI e. 0.003 M HCIO; 0.003 M CIO C. 0.8 M H2C2O4; 0.8 M NaHC204 Thymol Blue 16. Which indicator would be the best for a titration of an hypoiodous acid (HIO), Ka = 2x 10-11 TABLE 16.1 Ranges of Color Changes for Several Acid-Base Indicators a. Crystal violet pH 2 0 3...
Consider the titration of 25.00 mL of 0.115M NH3 (ka= 5.70e-10 ; kb= 1.75e-5) with 0.0920...
Consider the titration of 25.00 mL of 0.115M NH3 (ka= 5.70e-10 ;
kb= 1.75e-5) with 0.0920 M HCl.
a) calculate the pH of the solution for the following volume of
HCl: 6.25 mL
b) calculate the pH of the solution for the following volume of
HCl: 31.25 mL
c) calculate the pH of the solution for the following volume of
HCl: 50.0 mL
d) Which indicator from the table minimizes the titration error
and why?
blue Indicator thymol blue bromophenol...
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...
Identify the indicator that can be used at the highest pH. O alizarin yellow R phenolphthalein...
Identify the indicator that can be used at the highest pH. O alizarin yellow R phenolphthalein alizarin methyl red bromophenol blue Submit Request Answer What is the pH of a solution made by mixing 25.00 mL of 0.10 Macetic acid with 25.00 ml of 0.10 M KOH? Assume that the volumes of the solutions are additive K, 1.8 X 105 for CH.COH. 7.00 10.02 8.72 0528 Submit Reavest Answer
Referring to figure 10.4 choose an appropriate indicator for each titration. Justify your answer The last...
Referring to figure 10.4 choose an appropriate indicator for each
titration. Justify your answer
The last page shows data from titration
whether phenolphthalein is a good 7 Referring to Figure 10.4, choose an appropr to Figure 10.4, choose an appropriate indicator for each titration. Justify your answer. 0.1UM Acidic indicator pH range Basic Thymol Blue 11 12 13 12-28 and 8.0-92 14 Methyl Orange Bromophenol Blue 10-4. Congo Red 30-50 Bromocresol Green 3.8-5.4 Methyl Red 44-62 Bromothymol Blue 6.0-7.6 Phenol...
2. (10 pts) Using the information below and the table provided, estimate the pH of a...
2. (10 pts) Using the information below and the table provided, estimate the pH of a TM solution of sodium bisulfate (NaHSO4). • When phenolpthalein is added to 1 M NaHSO4 the resulting solution is colorless. . When thymol blue is added to 1 M NaHSO4 the resulting solution is yellow. • When methyl violet is added to 1 M NaHSO4 the resulting solution is violet. Indicator Solution Methyl Violet Thymol Blue pH range in which the color changes 0.5...
Section B ANALYTICAL CHEMISTRY 3. Answer ALL parts. (a) Answer each of the following i) ii)...
Section B ANALYTICAL CHEMISTRY 3. Answer ALL parts. (a) Answer each of the following i) ii) Define buffer capacity. (b) A solution was prepared by dissolving 1.572 grams of NaB (Relative Molecular Mass 169), the sodium salt of a weak base, in 100 0 cm of water. pK, for the weak acid HB is 6.3. Calculate the pi of the solution, K.-1 x 1014 (c) 20.0 cm' of the basic solution is titrated with 0.134 mol dm HCL. Calculate: i)...
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...
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 solut...
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.
#1's drop down menus both read weak/strong.
#2's drop down menu features a list of all the colors listed on the
graph.
0 5 10 15 20 25 30 35 40 45 50 mL of 0.1 M base added (1) The pH curve represents the titration of a __ acid with...
Be sure to answer all parts. Use the figure below to find an indicator for these titrations: (a) 0.10 M CH3NH2( Kb = 4.4 x 10-4 ) with 0.10 M HCI (select) (b) 0.50 MHI with 0.10 M KOH (select) 234S6 781011 12 13 14 Crystal violet Thymol blue Bromophenol blue Methyl ned Allzarin Bromodhymol blue Phenol red Allzarin yelow R
15. Which mixture would be the best butter? a. 1 M HF; 0.01 MF d. 0.1 M HC2H3O2; 0.01 M C2H302 b. 2 M HCI; 0.5 M CI e. 0.003 M HCIO; 0.003 M CIO C. 0.8 M H2C2O4; 0.8 M NaHC204 Thymol Blue 16. Which indicator would be the best for a titration of an hypoiodous acid (HIO), Ka = 2x 10-11 TABLE 16.1 Ranges of Color Changes for Several Acid-Base Indicators a. Crystal violet pH 2 0 3...
Consider the titration of 25.00 mL of 0.115M NH3 (ka= 5.70e-10 ;
kb= 1.75e-5) with 0.0920 M HCl.
a) calculate the pH of the solution for the following volume of
HCl: 6.25 mL
b) calculate the pH of the solution for the following volume of
HCl: 31.25 mL
c) calculate the pH of the solution for the following volume of
HCl: 50.0 mL
d) Which indicator from the table minimizes the titration error
and why?
blue Indicator thymol blue bromophenol...
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...
Identify the indicator that can be used at the highest pH. O alizarin yellow R phenolphthalein alizarin methyl red bromophenol blue Submit Request Answer What is the pH of a solution made by mixing 25.00 mL of 0.10 Macetic acid with 25.00 ml of 0.10 M KOH? Assume that the volumes of the solutions are additive K, 1.8 X 105 for CH.COH. 7.00 10.02 8.72 0528 Submit Reavest Answer
Referring to figure 10.4 choose an appropriate indicator for each
titration. Justify your answer
The last page shows data from titration
whether phenolphthalein is a good 7 Referring to Figure 10.4, choose an appropr to Figure 10.4, choose an appropriate indicator for each titration. Justify your answer. 0.1UM Acidic indicator pH range Basic Thymol Blue 11 12 13 12-28 and 8.0-92 14 Methyl Orange Bromophenol Blue 10-4. Congo Red 30-50 Bromocresol Green 3.8-5.4 Methyl Red 44-62 Bromothymol Blue 6.0-7.6 Phenol...
2. (10 pts) Using the information below and the table provided, estimate the pH of a TM solution of sodium bisulfate (NaHSO4). • When phenolpthalein is added to 1 M NaHSO4 the resulting solution is colorless. . When thymol blue is added to 1 M NaHSO4 the resulting solution is yellow. • When methyl violet is added to 1 M NaHSO4 the resulting solution is violet. Indicator Solution Methyl Violet Thymol Blue pH range in which the color changes 0.5...
Section B ANALYTICAL CHEMISTRY 3. Answer ALL parts. (a) Answer each of the following i) ii) Define buffer capacity. (b) A solution was prepared by dissolving 1.572 grams of NaB (Relative Molecular Mass 169), the sodium salt of a weak base, in 100 0 cm of water. pK, for the weak acid HB is 6.3. Calculate the pi of the solution, K.-1 x 1014 (c) 20.0 cm' of the basic solution is titrated with 0.134 mol dm HCL. Calculate: i)...
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...
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.
#1's drop down menus both read weak/strong.
#2's drop down menu features a list of all the colors listed on the
graph.
0 5 10 15 20 25 30 35 40 45 50 mL of 0.1 M base added (1) The pH curve represents the titration of a __ acid with...
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