Which of the following color indicators would be most appropriate for the titration of a weak base with a strong acid. A. Phenol red, pKa =8.0 B. Phenolphthalein, pKa =9.5 C. Bromophenol blue, pKa =4....
Which of the following color indicators would be most appropriate for the titration of a weak base with a strong acid. A. Phenol red, pKa =8.0 B. Phenolphthalein, pKa =9.5 C. Bromophenol blue, pKa =4.3 D. Alzarin yellow, pKa = 11.2
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Which of the following color indicators would be most appropriate for the titration of a weak base with a strong acid. A. Phenol red, pKa =8.0 B. Phenolphthalein, pKa =9.5 C. Bromophenol blue, pKa =4....
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
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...
Based on the following information... please answer A. B. and C. TITRATION OF A WEAK ACID...
Based on the following information...
please answer A. B. and C.
TITRATION OF A WEAK ACID TRIAL #1 equivalence point halfway point 25 VOLUME OF BASE ADDED 30 35 40 TITRATION OF A WEAK ACID TRIAL #2 1 equivalence point Hd half-way point s 10 15 30 35 40 45 20 25 VOLUME OF BASE ADDED Trial 1 Trial 2 Mass of oxalic acid 0.2039 pH at equivalence point a Mass of oxalic acid 0.2099 at equivalence point nt 8,5...
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...
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
Which of the following acids, whose pKa values are given next to them, would have the...
Which of the following acids, whose pKa values are given next to them, would have the strongest conjugate base? pKa a) H2SO4 b) CH3COOH 4.8 c) HS 12.9 d) NH* 2.0 9.2 Reaction of a carboxylic acid with an alcohol produces: a) an alkane b) an ester c) a ketone d) an amide During the neutralisation of a weak acid by a strong base the pH of the solution equals the pKa of the acid: a) at the beginning of...
1.A solution has a pH of 5.5. What would be the color of the solution if...
1.A solution has a pH of 5.5. What would be the color of the solution if each of the following indicators were added? (i) bromophenol blue(ii) bromothymol blue(iii) methyl red (iv) phenolphthalein 2.Calculate the pH at the equivalence point when 50.0 mL of a 0.100 M HN3 acid (a weak monoprotic acid having a Ka = 1.90x10-5) is titrated with 0.100 M NaOH. The titration reaction can be represented as HA + NaOH --- > NaA + H2O Hint: At...
It's a weak acid strong base titration Experiment 4: Identification of an unknown acid by titration...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
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...
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...
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...
Based on the following information...
please answer A. B. and C.
TITRATION OF A WEAK ACID TRIAL #1 equivalence point halfway point 25 VOLUME OF BASE ADDED 30 35 40 TITRATION OF A WEAK ACID TRIAL #2 1 equivalence point Hd half-way point s 10 15 30 35 40 45 20 25 VOLUME OF BASE ADDED Trial 1 Trial 2 Mass of oxalic acid 0.2039 pH at equivalence point a Mass of oxalic acid 0.2099 at equivalence point nt 8,5...
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...
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
Which of the following acids, whose pKa values are given next to them, would have the strongest conjugate base? pKa a) H2SO4 b) CH3COOH 4.8 c) HS 12.9 d) NH* 2.0 9.2 Reaction of a carboxylic acid with an alcohol produces: a) an alkane b) an ester c) a ketone d) an amide During the neutralisation of a weak acid by a strong base the pH of the solution equals the pKa of the acid: a) at the beginning of...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
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...
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...
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