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Referring to figure 10.4 choose an appropriate indicator for each
titration. Justify your answer
The last...
Chap 10.1 Data Analysis and Calculations Need help calculating the rate of titrant 10.1 Chemical Equilibrium...
Chap 10.1 Data Analysis and Calculations
Need help calculating the rate of titrant
10.1 Chemical Equilibrium Titration 1 HCI + NaOH Sample 0.10 M HCL Titrant: 0.10 Nach 1. Determine the drop rate a.) Volume of 20 drops: 1.5 mL b.) Time interval for 20 drops: 15.03 seconds c.) Calculate rate of titration d.) pH when phenolphthalein color change: 6.8 Titration 2 Sample 0.10 MHC2H302 Titrant: 0.10 M NaOH 5. Determine the drop rate a.) Volume of 20 drops: 1.6...
Choose the most appropriate indicator for the green titration curve (Kg = 104). 10 Ks =...
Choose the most appropriate indicator for the green titration curve (Kg = 104). 10 Ks = 10-10 pH Ko=107 Kg = 104 Strong acid 10.0 5.0 Volume of 1.0 M NaOH added (mL) A. Phenolphthalein for pH 9 B. Alizarin for pH 12 C. Bromthymol Blue for pH 7 D. Methyl red for pH 5 E. Thymolphthalein for pH 10.5
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...
19. Choose the most appropriate indicator for the titration of a weak base wit the expected...
19. Choose the most appropriate indicator for the titration of a weak base wit the expected equivalence point of the titration is at pH 6.0. a. methyl orange, pH range 3.2-4.4 b. methyl red, pH range 4.8-6.0 c. bromothymol blue, pH range 6.5-7.6 d. phenolphthalein, pH range 8.2-10.0 e. alizarin yellow R, pH range 10.1-12.0
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 /...
Choose the right indicator to indicate the endpoint for a titration whose titration curve looks as...
Choose the right indicator to indicate the endpoint for a
titration whose titration curve looks as follows:
Choose the right indicator to indicate the endpoint for a titration whose titration curve looks as follows: 12 10 I et 4 2 8 10 4 6 ml NaOH added bromocresol green (yellow below pH of 3.8, blue above 5.4) bromothymol blue (yellow below pH of 6.0, blue above 7.6) alizarin yellow (yellow below pH of 10.1, red above 12.0) phenolphthalein (colorless below...
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...
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
EXP #9:Pre-Lab answer question 3, attached below is page two to reference! Instructor Name: Student Name:...
EXP
#9:Pre-Lab
answer question 3, attached below is page two to
reference!
Instructor Name: Student Name: 3. An unknown solution gives the following sequential results for color when indicators are added (shown below). Using the corresponding color ranges from the table on page 2, estimate the approximate pH range of this unknown solution. Explain. Bluish purple Bromphenol blue: Yellow Methyl Red: Blue Bromothymol Blue: Colorless Phenolpthalein: For a titration, pure indicators are used because the goal is to use an...
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...
Chap 10.1 Data Analysis and Calculations
Need help calculating the rate of titrant
10.1 Chemical Equilibrium Titration 1 HCI + NaOH Sample 0.10 M HCL Titrant: 0.10 Nach 1. Determine the drop rate a.) Volume of 20 drops: 1.5 mL b.) Time interval for 20 drops: 15.03 seconds c.) Calculate rate of titration d.) pH when phenolphthalein color change: 6.8 Titration 2 Sample 0.10 MHC2H302 Titrant: 0.10 M NaOH 5. Determine the drop rate a.) Volume of 20 drops: 1.6...
Choose the most appropriate indicator for the green titration curve (Kg = 104). 10 Ks = 10-10 pH Ko=107 Kg = 104 Strong acid 10.0 5.0 Volume of 1.0 M NaOH added (mL) A. Phenolphthalein for pH 9 B. Alizarin for pH 12 C. Bromthymol Blue for pH 7 D. Methyl red for pH 5 E. Thymolphthalein for pH 10.5
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...
19. Choose the most appropriate indicator for the titration of a weak base wit the expected equivalence point of the titration is at pH 6.0. a. methyl orange, pH range 3.2-4.4 b. methyl red, pH range 4.8-6.0 c. bromothymol blue, pH range 6.5-7.6 d. phenolphthalein, pH range 8.2-10.0 e. alizarin yellow R, pH range 10.1-12.0
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 /...
Choose the right indicator to indicate the endpoint for a
titration whose titration curve looks as follows:
Choose the right indicator to indicate the endpoint for a titration whose titration curve looks as follows: 12 10 I et 4 2 8 10 4 6 ml NaOH added bromocresol green (yellow below pH of 3.8, blue above 5.4) bromothymol blue (yellow below pH of 6.0, blue above 7.6) alizarin yellow (yellow below pH of 10.1, red above 12.0) phenolphthalein (colorless below...
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...
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
EXP
#9:Pre-Lab
answer question 3, attached below is page two to
reference!
Instructor Name: Student Name: 3. An unknown solution gives the following sequential results for color when indicators are added (shown below). Using the corresponding color ranges from the table on page 2, estimate the approximate pH range of this unknown solution. Explain. Bluish purple Bromphenol blue: Yellow Methyl Red: Blue Bromothymol Blue: Colorless Phenolpthalein: For a titration, pure indicators are used because the goal is to use an...
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