Homework Answers
5) to solve the problem above Beer- Lambert's equation is used.
=
absorbance
=
molar absorptivity.
=
path length of the cell in cm
=
concentration in mol/L
Add Answer to:
(1 punt) viethyl orange is an acid-base indicator. In solutions of pH <3.1 it is red...
Methyl orange is an indicator with a Ka of 1 x 10-4. Its acid form, HIn,...
Methyl orange is an indicator with a Ka of 1 x 10-4. Its acid form, HIn, is red, while its base form, In-, is yellow. At pH 7.0, the indicator will be___________. a. red. b. orange. c. yellow. d. blue. e. not enough information
2. Methyl orange indicator is red below pH 4.0, and yellow above 4.5. Consider two solutions:...
2. Methyl orange indicator is red below pH 4.0, and yellow above 4.5. Consider two solutions: One contains NaOH, and the other contains H,904. Which solutic turn red? Which will turn yellow? Explain. Household Acids and Bases and pH Lab:
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...
Methyl orange may be used as an indicator in acid-base titrations, it is described by the...
Methyl orange may be used as an indicator in acid-base titrations, it is described by the equilibrium HMOrng (red) = H+ + MOrng (yellow) pka = 3.98 At what pHs might we observe the following colors in this order?: red, orange, yellow a. O 1.00, 14.00, 7.00 b. O 7.00, 1.00, 4.00 c. O 2.00, 6.00, 4.00 d. O 2.00, 4.00. 6.00
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...
Use the Table 7.1, estimate the pH of following solutions. The colors of the 4 indicators...
Use the Table 7.1, estimate the pH of following solutions. The colors of the 4 indicators in the solution are given. Explain your answer a. Solution A 2. 3. Make studie acid s you g your pre-l thymol blue: yellow methyl orange: yellow methyl red: orange bromothymol blue: yellow Range of pH b. Solution B thymol blue: yellow methyl orange: yellow methyl red: yellow bromothymol blue: blue Range of pH Row C: methyl red Row D: bromthymol blue 4. Swirl...
Please explain throughly The indicator congo red is at pH = 1 and red at pH...
Please explain throughly
The indicator congo red is at pH = 1 and red at pH = 14 and has pK_a = 4.1. Based on this blue information a. it would be a good choice for a strong acid strong base titration b. it is blue at pH = 4 c. its end point occurs at pH = 9.9 d. it is red at pH = 3 e. it would be a good choice for a strong acid weak base...
please help, thanks! FQUL 465g Ac t all time the pH of San section Pre-Laboratory Assignment...
please help, thanks!
FQUL 465g Ac t all time the pH of San section Pre-Laboratory Assignment Although you will use only small amounts of the olutions in this experiment, you must be aware of some of the hazards of these solutions. Brilly com- ment on the hazards of an aqueous solution of: 3 Astur | (1) NH A student performed an experiment similar to the one that you will perform but used different solutions The student's data are presented in...
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...
EQUL Uingen Vachelor Pre-Laboratory Assignment 1. Although you will use only amounts of the solutions in...
EQUL Uingen Vachelor Pre-Laboratory Assignment 1. Although you will use only amounts of the solutions in this experiment, you must be care of some of the hands of the solutions. com montone hands of an uno (1) 3. A student performed an experiment a r to the one that you will perform but e nt solutions The student's data are presented in the table below Students for estimating the pho tos nocate catre 0.1M Thymol Mt Bromotor solution Be Red...
2. Methyl orange indicator is red below pH 4.0, and yellow above 4.5. Consider two solutions: One contains NaOH, and the other contains H,904. Which solutic turn red? Which will turn yellow? Explain. Household Acids and Bases and pH Lab:
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...
Methyl orange may be used as an indicator in acid-base titrations, it is described by the equilibrium HMOrng (red) = H+ + MOrng (yellow) pka = 3.98 At what pHs might we observe the following colors in this order?: red, orange, yellow a. O 1.00, 14.00, 7.00 b. O 7.00, 1.00, 4.00 c. O 2.00, 6.00, 4.00 d. O 2.00, 4.00. 6.00
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...
Use the Table 7.1, estimate the pH of following solutions. The colors of the 4 indicators in the solution are given. Explain your answer a. Solution A 2. 3. Make studie acid s you g your pre-l thymol blue: yellow methyl orange: yellow methyl red: orange bromothymol blue: yellow Range of pH b. Solution B thymol blue: yellow methyl orange: yellow methyl red: yellow bromothymol blue: blue Range of pH Row C: methyl red Row D: bromthymol blue 4. Swirl...
Please explain throughly
The indicator congo red is at pH = 1 and red at pH = 14 and has pK_a = 4.1. Based on this blue information a. it would be a good choice for a strong acid strong base titration b. it is blue at pH = 4 c. its end point occurs at pH = 9.9 d. it is red at pH = 3 e. it would be a good choice for a strong acid weak base...
please help, thanks!
FQUL 465g Ac t all time the pH of San section Pre-Laboratory Assignment Although you will use only small amounts of the olutions in this experiment, you must be aware of some of the hazards of these solutions. Brilly com- ment on the hazards of an aqueous solution of: 3 Astur | (1) NH A student performed an experiment similar to the one that you will perform but used different solutions The student's data are presented in...
EQUL Uingen Vachelor Pre-Laboratory Assignment 1. Although you will use only amounts of the solutions in this experiment, you must be care of some of the hands of the solutions. com montone hands of an uno (1) 3. A student performed an experiment a r to the one that you will perform but e nt solutions The student's data are presented in the table below Students for estimating the pho tos nocate catre 0.1M Thymol Mt Bromotor solution Be Red...
Most questions answered within 3 hours.
-
3) Do you believe that Disney’s
acquisition-based growth strategy is sustainable?
4) Which competencies support this...
asked 32 minutes ago -
Lowell Corp. sells $100,000 of bonds to private investors. The
bonds are due in five years,...
asked 16 minutes ago -
Rank the following three stocks by their total risk level highest
to lowest night writer has...
asked 57 minutes ago -
A local
electronic company primarily manufactures four highly technical
telecommunication products. Each product must be processed...
asked 2 hours ago -
•Describe the basic structure of collagen monomers •Explain how
amino acid composition of collagen contributes to...
asked 3 hours ago -
Compute the sample correlation coefficient
r for each of the following data sets.
(Use 3 decimal...
asked 4 hours ago -
5a. What are the advantages and disadvantages of Proxy ARP?
b. What is the TTL field...
asked 4 hours ago -
An ice cube (density = 900[kg/m3]) with a side length of
2.54[cm] is held by a...
asked 5 hours ago -
would you say that leaders in the international context are born
or made? That is, can...
asked 6 hours ago -
Instructions
Read the Digital Trends article "Solid state drives are speedier
than hard disk drives. Are...
asked 6 hours ago -
A multiple-choice test consists of 29 questions with possible
answers of a, b, c, d. Estimate...
asked 6 hours ago -
Question 1: Ethanol is the active ingredient of alcoholic
beverages. It is also s a possible...
asked 6 hours ago