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![a) pH at 13% ionised is [Hot] = 13% of 2410 - 13 X 201x104 -.73x10 loo pH = -log [Hz0 t] = 4.56 6) ph at 87% ionised is [H30+](http://img.homeworklib.com/questions/2e5801e0-6f38-11ea-9119-c996b6bcbb80.png?x-oss-process=image/resize,w_560)
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The indicator meta-cresol purple is an acid with a k, of 3.1x10-2. In a 2.1x10-4 M...
The indicator dinitrophenol is an acid with aKaof 1.1×10−4. In a 1.0×10−4-Msolution, it is colorless inacid...
The indicator dinitrophenol is an acid with aKaof 1.1×10−4. In a 1.0×10−4-Msolution, it is colorless inacid and yellow in base. Calculate the pH range over which it goes from 10% ionized (colorless) to 90% ionized(yellow).
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...
Which indicator below could be used in the titration of aqueous NaOH with HCl solution? Indicator ...
Which indicator below could be used in the titration of aqueous NaOH with HCl solution? Indicator Acid Range Color Color-change pH Basic Range Color i. pink 1.2-2.8 yellow ii. blue 3.4-4.6 yellow iii. yellow 6.5-7.8 purple iv. colorless 8.3-9.9 red
EASY QUESTION! Williamson ether synthesis lab question. meta-cresol+chloroacetic acid with KOH as a base. I found...
EASY QUESTION! Williamson ether synthesis lab question. meta-cresol+chloroacetic acid with KOH as a base. I found my unknown compound which was meta cresol by comparing the MP, but I cannot find the correct MP for meta cresol. I was told the MP for meta cresol is around 100 degrees C, and I was trying to look up a more accurate value then just "around 100 C" but every source I'm finding says the MP is 10-11 C. If the MP...
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...
2 points 9. Using your textbook and class notes as a reference, indicate if cresol red...
2 points 9. Using your textbook and class notes as a reference, indicate if cresol red would be a good acid-base indicator for this titration. Justify your answer using your knowledge of titrations curves and indicators. if we use cresol red which has a ph range of 8-10.5 it can good indicator because our titration is Naoh and ASA i.e strong base and weak acid so equivalence point is around ph=9. Cresol red can indicate this equivalence point by changing...
Methyl orange is an indicator that changes color from red to yellow-orange over the pH range...
Methyl orange is an indicator that changes color from red to yellow-orange over the pH range from 2.9 to 4.5. Methyl orange would be the most appropriate indicator for which type of acid base titration? A) A weak acid titrated with a strong base B) A weak base titrated with a strong acid C) A strong acid titrated with a strong base Please explain
Answer all assigned questions and problems, and show all work. Determine the pH of (a) a...
Answer all assigned questions and problems, and show all work. Determine the pH of (a) a 0.40 MCH3CO2H solution, (b) a solution that is 0.40 MCH3CO2H and 0.20 MNaCH3CO2. (8 points) (Reference: Chang 16.5) Which of the following solutions can act as a buffer? (a) KCl/HCl, (b) KHSO4/H2SO4, (c) KNO2/HNO2.(5 points) (Reference: Chang 16.9) Calculate the pH of the buffer system made up of 0.15 MNH3/0.35 MNH4Cl. (5 points) (Reference: Chang 16.11) The pH of a bicarbonate-carbonic acid buffer is...
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 /...
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...
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...
2 points 9. Using your textbook and class notes as a reference, indicate if cresol red would be a good acid-base indicator for this titration. Justify your answer using your knowledge of titrations curves and indicators. if we use cresol red which has a ph range of 8-10.5 it can good indicator because our titration is Naoh and ASA i.e strong base and weak acid so equivalence point is around ph=9. Cresol red can indicate this equivalence point by changing...
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 /...
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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