A 50 g sample of polythexamethylene adipamide) is found to contain 5.10 x10 mol of carboxyl groups by both titration with base and infrared spectroscopy. Calculate the number average molecular weight of the polymer. Describe and draw the structure of the pohưoete

A 50 g sample of polythexamethylene adipamide) is found to contain 5.10 x10 mol of carboxyl groups by both titration with base and infrared spectroscopy. Calculate the number average molecular weight of the polymer. Describe and draw the structure of the pohưoete

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: extraction and crystallization techniques to separate a solid mixture of organic compounds

A: Lab procedure – The laboratory procedure involves isolating, purifying, and identifying Group 1 and…

Q: For Qualitative analysis of amines and amine Unknown, provide chemical structures.

A: A lone pair impacts the reactivity of primary, secondary, and tertiary amines. Amines are basic and…

Q: Potassium dichromate was used in the chromic acid preparation. Would there be a difference if…

A: Yes, there would be a difference if chromium trioxide was used instead of potassium dichromate in…

Q: A 1.5 L of organic compound solution contain 8.0 g of benzoic acid. Methyl tert-butyl ether (MTBE)…

A: Here, benzoic acid is extracted 3 times and in each time the recovery rate is 40%

Q: Carboxylic acids, including fatty acids and benzoic acids, are often present in both municipal and…

A: Schematic representation

Q: by the tube for trapping H20 shows a 13.7-mg increase. A second sample of 121.8 mg is treated with…

A: Here by applying principle of conservation of atom ,we can determine the percentage of each element…

Q: A mixture is made up of low molecular weight carboxylic acid, alcohol and ester. What one step…

A: Extraction is the method to separate components from mixture

Q: Naphthalene, C10H8 is insoluble in water but sublimes easily when heated. How could you separate a…

A: This problem is based on the general method of separation.

Q: Describe by showing the chemical reactions how you would prepare linear poly(methacrylate) with a…

Q: Knowing that the extraction efficiency of an organic solvent over an aqueous solution can be…

A: In the above problem propanoic acid is extracted by heptanes from aqueous part

Q: Answer the questions below. a) 500 ml. Acetic acid in 200 mL acetic acid-water mixture containing…

A: Partition coefficient = concentration of X in isopropyl ether / concentration of X in water

Q: polydimethylsiloxane

Q: Q22. You make a standard curve of BSA using the same method as in the first class and obtain the…

A: a) Slope of the line is y=0.055x b) 51uL of acid precipitation fraction c) Absorbance = 0.972 Find…

Q: 2.1g of sample are dissolved in methylene chloride and the sample is extracted with aqueous…

A: Given, weight of the sample = 2.1g Isolated weight of compound, ethyl-p-aminobenzoate = 0.8g…

Q: A student tries to synthesize ethyl acetate from 25 g glacial acetic acid (60.05 g/mol), 5 ml H2SO4…

A: We have 25 g of acetic acid, 5 ml sulphuric acid, 30 ml of ethanol and the given yield of ethyl…

Q: Describe the difference between protic and aprotic solvents. Provide an example of each to support…

Q: state limiting reagent and calculate theoretical yield. reaction: synthesis of dulcin

Q: A 5.00 mL sample of filtered orange juice was treated with 50.00 mL of 0.01023 M I3 – to oxidize…

Q: Alkaloids present in 20.0 grams of dried leaves containing 0.20% w/w of alkaloids was completely…

A: Mass of alkaloid can be evaluated as: Mass of dried leaves=20.0 gramsMass of alkaloid in dried…

Q: Using AIBN as the initiator, illustrate the mechanism of free radical polymerization that produces…

Q: A 60.0 mL solution of 0.0450 M hydroxylamine is extracted with 125 mL of solvent. The distribution…

A: Given, Concentration of hydroxylamine = 0.0450 M Volume of hydroxylamine = 60.0 mL Volume of…

Q: Anthracene P(C6H5)3- Xylene at reflux 1.1 equivalent

A: First step reaction is Dieles Alder reaction called [4+2]π cycloaddion reaction between diene and…

Q: Why is water used for liquid-liquid extractions? Select all that apply. Pourquoi l'eau est utilisée…

A: Liquid-liquid extraction is a method to separate compounds or metal complexes based on their…

Q: Which solvent would be the best choice for use as an extraction solvent in a separatory funnel with…

A: The best choice as an extraction solvent with aqueous solution of NaHCO3 followed by Rota…

Q: When you are extracting an aqueous solution with an organic solvent, you are uncertain of which…

A: A question based on analytical separation that is to be accomplished.

Q: A solution of amino acid having carboxylic side chain was titrated against NaOH. If initial pH of…

A: A molecule that have equal number of positive charged functional group and negatively charged…

Q: 7. A 0.4021-g sample of a purified organic acid was dissolved in water and titrated…

A: Here we have to determine the molecular mass of organic acid if 0.4021 g of sample of purified…

Q: After digesting a 2.6824g stake sample the nitrogen is oxidized to NH4; converted to NH3 with NaOH…

A: The question is based on the concept of percentage composition. we have to calculate how much…

Q: You performed an experiment in order to determine the quantitative analysis of total aldehyde…

A: Total weight of lemon oil = 5 g Volume of 0.5 N KOH used = 2 mL To calculate the total aldehyde…

Q: Draw the structure of gly at pH 7. At what pH do you have 100% protonation of the carboxyl group.…

Q: In an end-group analysis of a polyester sample prepared from 4-hydroxybenzoic acid, the acid number…

A: To find out the degree of polymerisation of a polyester prepared from 4-hydroxy benzoic acid. On…

Q: A titration experiment required 12.50 ml of standard hydrochloric acid solution to reach the…

A: Volume of HCl required for phenolphthalein endpoint = 12.5 mL Volume of HCl required for methyl…

Q: Determine the gravimetric analysis of the products of complete combustion of acetylene ?2 ?2 with…

A: Air combustion of acetyleneC2H2 + 2.5 O2 + 2.5 7921 N2 → 2CO2 +2.5 7921N2 + H2O with 200 per cent…

Q: 0.69g of salicylic acid was reacted with 0.6g acetic anhydride in the presence of concentrated…

Q: Carboxylic acids, including fatty acids and benzoic acids, are often present in both municipal and…

A: As a result of a thorough waste characterization program and preliminary evaluation of the costs…

Q: How do we detect organic compounds and inorganic compounds used in GC analysis?

A: Gas Chromatography is an analytical technique used to separate various components inside the column…

Q: A sample of a sports drink containing the dye was assayed using the prescribed method and found to…

A: We know Beer-Lambert law equation as: A = E*l*c where A = Absorbance E = Molar…

Q: To determine the purity of a synthetic preparation of methylethyl ketone, C4H8O, it was reacted with…

A: Given, Volume of sample = 3.00 mLconcentration of NaOH = 1.2149 M

Q: A 40.0 mL solution of 0.0350 M hydroxylamine is extracted with 115 mL of solvent. The distribution…

Q: HO fraction mass (g) M (kg/mol) 1 1.15 12.5 1 OH 2 0.73 20.5 HO 3 0.925 32.3 4 0.69 38.5 5 1.88 62.4…

Q: HO OH OH OH NH3 (aq)

A: We have to give the possible mechanism of the given transformation.

Q: Describe the preparation of 2.00 L of 0.1500 M HCl from primary-standard grade NaCl using a…

A: GIven : Molarity of HCl : 0.1500M Volume of solution: 2.00L Molar mass of NaCl: 58.44 g/mol

Q: Your employer hands you a heterogeneous mixture and asks you to isolate all of thehexane that you…

A: 1. **Filtration**: Begin with a simple filtration to remove the sand, as it is an insoluble solid.…

Concept explainers

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

Question

A 50 g sample of polythexamethylene adipamide) is found to contain 5.10 x10 mol of
carboxyl groups by both titration with base and infrared spectroscopy. Calculate the
number average molecular weight of the polymer.
Describe and draw the structure of the polhvorto

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

A boron-siloxane cross linked polymer was formed from the reaction between dichlorodimethylsilane in diethyl ether with deionised water. Which was neutralised with sodium bicarbonate solution before being turned into a polymer upon the addition of boric acid. What is the structure of the polymer synthesised and what is the molecular weight of one monomer unit of this boron-siloxane cross linked polymer?
Please don't provide handwritten solution ...
What should I use as a balanced equation for the combination of Cream of Tartar and sodium carbonate monohydrate to form Seignette Salt? 1) 2KC4H5O6 + Na2CO3·H2O+ 6H2O → 2 KNaC4H4O6·4H2O + CO2 Or 2) 2KC4H5O6 + Na2CO3·H2O+ 2H2O → 2 KNaC4H4O6·4H2O + CO2 Is the second reaction more accurate? Since if we're going to count the number of K,Na,C,H,O in the reactants and products they're both equal, whereas, in the 1st reaction, the 6 mol of H2O makes the Equation not balanced. Is this right?
Underline the organic solvent(s) given that would work for the extraction:dichloromethane-water, acetone-water, benzene-water.Concisely explain why the solvent(s) not underlined do(es) not work.
In a Grignard reaction, 1.4555 g phenyl bromide, 10. g carbon dioxide, 0.5734 g magnesium filings, and 30.2 mL of 6M HCl were used but only 573 mg of benzoic acid were isolated after recrystallization? what was the percent yield for the overall process? Give the answer to the nearest whole number please
Using the solubility information from your table of constants, make a flow chart, showing the procedure you would use to separate 4- chloroaniline from 1,4-dibromobenzene. Indicate what compound is in each solvent by writing the structures at the appropriate locations in the flow chart. please answer the question, and draw the chart.
Solve the missing with complete solution.
OH 1. (a) Write the overall reaction scheme of the N-acetyltryosine methyl ester reacting water. The acidic proton is bolded in the N H structure. / N-acetyltyrosine methyl ester pK=10 (b) Based on your sketch, predict whether the N-acetyltryosine methyl ester is more soluble in 0.1 M HCl or 0.1 M NAOH. Justify your reasoning using your reaction above and chemical logic.
The enthalpy change (ΔH°) for borax dissolution can be determined using the equation below, where Ksp1 is the solubility product constant at room temperature in Kelvin (T1) and Ksp2 is the solubility product constant at ice bath temperature in Kelvin (T2). ln(Ksp1/Ksp2) = (ΔH°/R)×(1/T2 − 1/T1)From your experimental results, calculate the enthalpy change in kJ/mol. R = 8.314 J/(mol K). Ksp1 AVG: 0.0139 Ksp2 AVG: 0.00057 Given R: 8.314 J/(mol K). T1: 293.15K T2: 277.55K
Which solvent would be the best choice for use as an extraction solvent in a separatory funnel with an aqueous solution of NaHCO3 followed by rotoevaporation? Hint: Consider the ability of the solvent to dissolve a wide range of substances, its miscibility with water, and its ability to evaporate the solvent easily by rotoevaporation. ethanol hexane toluene ethylene glycol methylene chloride
Given a sample of anise oil for its phenol (anethol) content determination, 10 ml was used as sample and after treatment with KOH TS, the non-phenolic layer in the neck of the cassia flask measured 1.5 ml. Calculate the (%) anethol content of the anise oil.
13-CH2-O+ nA- WATER SOLUB X bapps/assessment/review/review.jsp?attempt_id= 4910689_1&course_id=_69748_1&content_id= 3071. IVE Round your answer to the second decimal place. Selected Answer: 8.26 estion 8 In an aqueous solution at 25 °C, when the [OH"] > [H3O*] which ONE of the following is true? Selected Answer. The pH is less than 7 and the solution is acidic. Answers! The pH is greater than 7 and the solution is basic. The pH is greater than 7 and the solution is acidic. The pH is less than 7 and the solution is acidic. The pH is less than 7 and the solution is basic. Question 9 in a 11 ratio during a neutralization reaction?