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In a titration using methyl orange as an indicator 25.0 cm of a solution of 0.1...
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 /...
why is the ans A? PAP 25.0 cm? of sulphuric acid neutralises 50.0 cm 0.1 mol...
why is the ans A?
PAP 25.0 cm? of sulphuric acid neutralises 50.0 cm 0.1 mol dm sodium hydroxide solution. What is the molarity of the sulphuric acid?! 25.0 cm asid sulfurik asid meneutralkan 50.0 cm larutan natrium hidroksida 0.1 mol dm? Apakah kemolaran asid sulfurik? A 0.10 mol dm3 C 0.20 mol dm3 B 0.15 mol dm D 0.40 mol dm This Kertas lell
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 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...
A student performs a titration of 25.0 mL of 0.100 M lactic acid (HC3H5O3), using 0.050...
A student performs a titration of 25.0 mL of 0.100 M lactic acid (HC3H5O3), using 0.050 M sodium hydroxide (NaOH). The Ka for lactic acid is 1.4 x 10-4. a) (10 points) What is the pH of the solution after the addition of 23.5 mL of sodium hydroxide solution? b) (4 points) How many milliliters of NaOH are required to reach the equivalence point? c) (4 points) Write the chemical reaction that will determine the pH of the solution at...
21. 50.0 cm of 1.00 mol dm hydrochloric acid solution, HCl(aq) was added to a piece...
21. 50.0 cm of 1.00 mol dm hydrochloric acid solution, HCl(aq) was added to a piece of pure marble, CaCO3 with a mass of 1.926 g. After all the marble had reacted the resulting solution was put into a 100 cm volumetric flask and the volume made up to the mark with distilled water. 10.0 cm of this solution was then titrated with 1.00 x 10 moldmºsodium hydroxide solution, NaOH(aq).Calculate the volume of the sodium hydroxide solution required to neutralize...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) = H(aq) + MO"(aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH the color reverts to yellow a. Why does adding 6 M HCl to...
Question 2 (10 points) If 25.0 mL of 0.451 M NaOH solution is titrated with 0.253...
Question 2 (10 points) If 25.0 mL of 0.451 M NaOH solution is titrated with 0.253 MH2SO4, the flask at the endpoint will contain (besides the indicator phenolphthalein) as the principal components: sodium hydroxide, sulfuric acid, and water dissolved sodium sulfate and water sodium hydroxide, sodium sulfate, and water dissolved sodium sulfate, sulfuric acid, and water precipitated sodium sulfate and water Question 3 (10 points) A 75.0-ml sample of 0.0650 MHCN (K-62 10-10) is titrated with 0.65 M NaOH. What...
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...
True or False: During a titration the solution of UNKNOWN concentration should be placed in the...
True or False: During a titration the solution of UNKNOWN concentration should be placed in the burette, and added to the solution of KNOWN concentration (in the E.flask) True or False: When titrating, the acidic solution always goes in the burette, and the basic solution in the E.flask) In order to find the concentration of a chromic acid solution, a student measured out 50.0 mL in a graduated cylinder, then poured this volume into a beaker. The student then added...
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 /...
why is the ans A?
PAP 25.0 cm? of sulphuric acid neutralises 50.0 cm 0.1 mol dm sodium hydroxide solution. What is the molarity of the sulphuric acid?! 25.0 cm asid sulfurik asid meneutralkan 50.0 cm larutan natrium hidroksida 0.1 mol dm? Apakah kemolaran asid sulfurik? A 0.10 mol dm3 C 0.20 mol dm3 B 0.15 mol dm D 0.40 mol dm This Kertas lell
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.
#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...
21. 50.0 cm of 1.00 mol dm hydrochloric acid solution, HCl(aq) was added to a piece of pure marble, CaCO3 with a mass of 1.926 g. After all the marble had reacted the resulting solution was put into a 100 cm volumetric flask and the volume made up to the mark with distilled water. 10.0 cm of this solution was then titrated with 1.00 x 10 moldmºsodium hydroxide solution, NaOH(aq).Calculate the volume of the sodium hydroxide solution required to neutralize...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) = H(aq) + MO"(aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH the color reverts to yellow a. Why does adding 6 M HCl to...
Question 2 (10 points) If 25.0 mL of 0.451 M NaOH solution is titrated with 0.253 MH2SO4, the flask at the endpoint will contain (besides the indicator phenolphthalein) as the principal components: sodium hydroxide, sulfuric acid, and water dissolved sodium sulfate and water sodium hydroxide, sodium sulfate, and water dissolved sodium sulfate, sulfuric acid, and water precipitated sodium sulfate and water Question 3 (10 points) A 75.0-ml sample of 0.0650 MHCN (K-62 10-10) is titrated with 0.65 M NaOH. What...
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...
True or False: During a titration the solution of UNKNOWN concentration should be placed in the burette, and added to the solution of KNOWN concentration (in the E.flask) True or False: When titrating, the acidic solution always goes in the burette, and the basic solution in the E.flask) In order to find the concentration of a chromic acid solution, a student measured out 50.0 mL in a graduated cylinder, then poured this volume into a beaker. The student then added...
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