Question 35Identify the indicator that has two endpoints.(Refer to Fig. 14.19 in the ebook)1 phenolphthalein2alizarin(3) m-nitrophenol4alizarin yellow R5 phenol redQuestion 36-/1-/1Calculate the [OH] in a 0.79 M NH2OH solution.Hydroxylamine, NH2OH, is a weak base with a Kbof 1.1 × 10-88.7 x 10-9 M2 4.0339.979.3 x 10-5 M

Solution 35)Indicators and their ph ranges are:Phenol red: pH range 6.8 to 8.2.Alizarin yellow R: pH…

Answered: Question 35 Identify the indicator that…

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter9: Acids, Bases, And Salts

Section: Chapter Questions

Problem 9.71E

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Similar questions

A solution has a pH of 4.5. What would be the color of the solution if each of the following indicators were added? (See Fig. 14-8.) a. methyl orange b. alizarin c. bromcresol green d. phenolphthalein
How do the components of a conjugate acid—base pair differ from one another4? Give an example of a conjugate acid—base pair to illustrate your answer.
For oxyacids, how does acid strength depend on a. the strength of the bond to the acidic hydrogen atom? b. the electronegativity of the element bonded to the oxygen atom that bears the acidic hydrogen? c. the number of oxygen atoms? How does the strength of a conjugate base depend on these factors? What type of solution forms when a nonmetal oxide dissolves in water? Give an example of such an oxide. What type of solution forms when a metal oxide dissolves in water? Give an example of such an oxide.
Explain why an acid-base indicator changes color over a range of pH values rather than at a specific pH.
Natural goldenrod pigment is a yellow dye that changes to a bright red color in the presence of a basic solution and remains yellow in contact with an acidic or neutral solution. Peter is using goldenrod paper to test three solutions he prepared Because Peter wants his message to be clearly visible in a red background at the end of his investigation, in what sequence should he use the solutions to paint the paper? A Paint first with lemon juice and then with tap water. B Paint first with laundry detergent and then with tap water. C Paint first with laundry detergent and then with lemon juice. D Paint first with lemon juice and then with laundry detergent.
Question 33 Identify the indicator that can be used at - -/1 the highest pH. (Refer to Fig. 14.19 in the ebook) 1 alizarin 2 thymolphthalein 3 thymol blue 4 methyl red 5 alizarin yellow R
[References] A chemist prepares dilute solutions of equal molar concentrations of CH3 NH,, CH3 NH, CI, NaNO,, and NaNO3 Rank these solutions from highest pH to low pH. (K, for CH3 NH2 is 4.4 x 10 K. for HNO, is 4.5 x 10 4.) Decreasing of pH Drag and drop your selection from the following list to complete the answer CH,NH2 NaNO; CH;NH3 CI NaNO,
After creating a graph of pH versus log([Hin]/[In-]), the following trendline is obtained. y = -0.9375x + 3.931 Calculate the pKa of bromophenol blue from this data to three decimal places.
What is the molarity of the acid and molecular weight of unknown, given... Molarity NaOH: .3, Concentration of unknown: 31 g/L # mL NaOH to reach 1st inflection point: 25 (pH 4) # mL NaOH to reach 2nd inflection point: 50 (pH 11) pH @ 1st 1/2 equivalence point: 2.6 Volume of unknown acid: 25 mL
Use the followting information to answer the next question. The labels came off four cleaning solution containers found under a kitchen sink. Each of the cleaning solutions was tested with two available indicators, and the following results were recorded. Cleaning Solution Bromothymol blue Phenolphthalein pink 1 blue 2 blue colourless 3. green colourless 4 blue light pink Nomerical Response O Listed in order from lowest to highest pH, the cleaning solutions are, respectively, and (Record your feur-digit answer in the oumerical-response section en the answer sheet)
which indicator C methyl in the red)will b 1owi o0ing (choose either pheno shang Stro ong acid CHc. 1. 2Weak acid (HOA 3.Weak bas (NH3)
select the appropriate indicator for each of the following titles: i.sodium hydroxide with hydrochloric acid ii.sodium hydroxide with ethanoic acid iii.amoniak with hydrochloric acid

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