Question
6. In the molecular weight determination by the Dumas method, as illustrated below,
several grams of an organic liquid were drawn into the bulb. The bulb was then immersed in
a water bath at 87 C and kept there until all the liquid was vaporized and the air in the bulb
was replaced by the vapor. The tip was then sealed shut and the bulb removed from the
bath, cooled, dried and weighed at room temperature. The weight of the bulb filled with the
vapor was 36.127 g; the weight of the empty (evacuated) bulb was 35.427 g; the bulb's
volume was 200.0 mL; room temperature was 25°C; and the barometric pressure was
720 mm Hg. Calculate the molecular weight of the organic liquid.
expand button
Transcribed Image Text:6. In the molecular weight determination by the Dumas method, as illustrated below, several grams of an organic liquid were drawn into the bulb. The bulb was then immersed in a water bath at 87 C and kept there until all the liquid was vaporized and the air in the bulb was replaced by the vapor. The tip was then sealed shut and the bulb removed from the bath, cooled, dried and weighed at room temperature. The weight of the bulb filled with the vapor was 36.127 g; the weight of the empty (evacuated) bulb was 35.427 g; the bulb's volume was 200.0 mL; room temperature was 25°C; and the barometric pressure was 720 mm Hg. Calculate the molecular weight of the organic liquid.
Expert Solution

Want to see the full answer?

Check out a sample Q&A here
Blurred answer
Students who’ve seen this question also like:
Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
Not helpful? See similar books
Chemistry
Chemistry
Chemical Foundations. 1RQ
marketing sidebar icon
Want to see this answer and more?
Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*
*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.

Related Chemistry Q&A

Find answers to questions asked by students like you.

Q: 6. In the molecular weight determination by the Dumas method, as illustrated below, several grams of…

A: The mass of the bulb filled with vapor was 36.127 g;The mass of the empty (evacuated) bulb was…

Q: 6. In the molecular weight determination by the Dumas method, as illustrated below, several grams of…

A: The mass of the bulb filled with vapor was 36.127 g;The mass of the empty (evacuated) bulb was…

Q: Acetyl Salicylate, C9H8O4, reacts with Potassium hydroxide. 1.75g of acetyl salicylate were…

A: Given data,Mass of acetyl salicylate=1.75gVolume of KOH=50cm3=0.050dm3Molarity of…

Q: The owner of a swimming pool supply company is offered what appears to be an exceptionally good deal…

A: Concentration of solution is defined as amount of solute present per unit amount of solvent or…

Q: The owner of a swimming pool supply company is offered what appears to be an exceptionally good deal…

A: Solution - According to the question - Given values are - 50.0 mL aliquot of the diluted sample…

Q: The owner of a swimming pool supply company is offered what appears to be an exceptionally good deal…

A: Volumetric analysis is a quantitative method of analysis which is based on measurement of volumes.…

Q: The procedure for the synthesis of menthone indicates that you should use 10 cm³ of 6M sulphuric…

A: Given that : The volume of the sulfuric acid to be used = 10 cm3 The molarity of sulfuric acid to be…

Q: The hydrated salt, MY3-xH0, was heated strongly in a crucible to remove all the water molecules of…

A: Hydrate = MY3.xH2O Salt = MY3 (MM = 230.99 g/mol) The data for this experiment are given in the…

Q: Acetylsalicylic acid commonly known as Aspirin (C9H8O4) is used to treat fever, inflammation, and…

A: Synthesis of Aspirin for which unconsumed excess reagent is to be determined.

Q: ENTIFICATION: Acetylsalicylic acid commonly known as Aspirin (C9H8O4) is used to treat fever,…

A: Given that: Salicylic acid, C7H6O3 = 5.00 gAcetic anhydride, C4H6O3 = 7.14 gAspirin, C9H8O4 = 5.25 g…

Q: Sulfur – yellow powder with a strong and somewhat unpleasant odor has anti-inflammatory, astringent,…

A: Given: Mass of soap sample burned = 3.130 mg. Concentration of NaOH used = 0.01530 M And volume of…

Q: ou separated acetanlide from sand and sodium chloride (NaCl) via recrystallization. You separated…

A: We know, Percentage yield = (actual yield/theoretical yield) * 100%

Q: Would it affect your calculation of theoretical yield? Could it affect your measurement of actual…

A: In this experiment the determination of theoretical and actual yield of compound is based on the…

Q: A permanganate solution is prepared by dissolving 20.0123 g KMNO4 in 500 mL of distilled water and…

A: Click to see the answer

Q: A permanganate solution is prepared by dissolving 20.0123 g KMNO4 in 500 mL of distilled water and…

A: Given: The reaction is as follows, 5H2C2O4+2MnO4-+6H+⇌10CO2+2Mn2++8H2O Molarity of oxalic acid =…

Q: Pure CO2 may be prepared by treating limestone with sulfuric acid. The limestone used in the process…

A: The relative masses of constituent elements of a molecule can be expressed by mass percentage…

Q: How many grams of Ni(OH)2 are produced from the reaction of 45.0 mL of a 1.60 M NaOH solution and…

A: Given, 45.0mL of 1.60M NaOH

Q: A bottle of aromatic ammonia spirit has been recalled from the market for containing less amount of…

A: Hii there, As there are multiple sub parts posted. we are answering first-three sub parts . If you…

Q: A bottle of aromatic ammonia spirit has been recalled from the market for containing less amount of…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: The goal of the first part of the experiment is to determine the value of n in the formula for…

A: Given :  Mass of sodium percarbonate = 25 mg  Moles of H2O2 = 0.229 millimoles

Q: 0.004 C8H7NO3, 15mL ethanol, 0.002mol NaBH4 was used. HCl was used to acidify. It was then extracted…

A: Click to see the answer

Q: Using dimensional analysis, find the theoretical mass of the Zn3(PO4)2-4H20 precipitate that should…

A: Given : Mass of Zn(C2H3O2)2.2H2O reacting = 2.19 g Molar mass of Zn(C2H3O2)2.2H2O = Atomic mass of…

Q: 2.513 grams of salicylic acid were allowed to react with excess acetic anhydride to give…

A: # We are given 2.513 g of salicylic acid and excess anhydride reagent to give actual yield 0.534 g…

Q: What is the gravimetric factor when the desired substance is Cr2O3 and the weighed substance is…

A: In the given question we have to calculate the gravimetric factor. The general formula for…

Q: What is the correct volume of 2.5 M PhMgBr in THF is needed to completely react with 1.5 mL of…

A: The quantitative relationships (moles/volume/mass) of different reaction's components is derived…

Q: A student carried out the reaction shown by reacting 10.0g P4 with excess Cl2 and obtained 35.0g of…

A: The given chemical reaction is:P4 + 6 Cl2 → 4 PCl3Molar mass of P4=123.9 g/mol Molar mass of PCl3=…

Q: A student carried out the reaction shown by reacting 10.0g P4 with excess Cl2 and obtained 35.0g of…

A: Given: Mass of P4 = 10.0 g Mass of PCl3 ( actual yield) = 35.0 g Molar mass of P4 = 123.89 g/mol…

Q: What is the gravimetric factor when the desired substance is Cr2O3 and the weighed substance is…

A: The gravimetric factor when the desired substance is Cr2O3 and the weighed substance is PbCrO4 is 1…

Q: would your value for the % yield be changed (increased, decreased, or remain the same) if: you did…

A: The chemical reactions are guided by the stoichiometry of the reactants and products present in the…

Q: The percentage of protein in most food products is found arbitrarily by multiplying the percentage…

A: One of most important element that is present in protein is nitrogen. In the food product, the…

Q: Mass of Na2CO3.H2O (g) = 2.12g (g) Mass of the CaCl2.2H2O (g) = 1.98g Mass of the top funnel +…

A: Given data, Mass of Na2CO3.H2O=2.12gMass of CaCl2.2H2O=1.98gMass of CaCO3…

Q: 8 90g of glucose is dissolved in water. The glucose solution is fermented. C6H1206 → 2CO2 + 2C2H5OH…

A: Click to see the answer

Q: In synthesizing aspirin, a student used 5.324 g of salicylic acid and excess acetic anhydride.…

A: When salicylic acid reacts with acetic anhydride in presence of an acid it forms acetyl salicylic…

Q: How many moles of NiCl2NiCl2 can be formed in the reaction of 7.00 molmol of NiNi and 14.0 molmol of…

A: Chemical Equation will be given by- 2HCl + Ni ----> NiCl2 + H2 According to reaction, We can…

Q: Toluene, C7H8 , is burned with 30% excess air. A bad burner causes 15% of the carbon to form soot…

A: Click to see the answer

Q: A sample of freshly precipitated and filtered silver chloride weighs 459.0 mg. If 1.00 % of the…

A: The chemical equation representing the decomposition reaction of silver chloride is shown below.

Q: 2Na + ZnCl2 ---> 2NaCl + Zn What mass of Sodium Chloride would be produced if 50.0mL of 2.00mol/L…

A: Click to see the answer

Q: A side reaction of the rayon manufacturing process from wood pulp is: 3CS2 +6NaOH=2Na2CS3 +Na2CO3…

A: Click to see the answer

Q: A sample of an industrial waste water is analyzed and found to contain 16.5ppb Fe2+. How many grams…

A: The concentration of any substance can be expressed in different ways such as molality, molarity,…

Q: Calculate the theoretical mass of NaBH4 needed to reduce 100mg of Benzil to (+-)-benzoin

A: Click to see the answer

Q: Sulfanilic acid used 25g, Sodium carbonate used 15.2g, Sodium nitrate used 9.94g, 6M HCI used 72 ml,…

A: Sulfanilic acid(C6H7NO3S) reacts with Dimethyl aniline(C8H11N) in the presence of sodium carbonate,…

Q: Which value is closest to the mass of Zno e produced when 50.0 g ZnS is heated in an open vessel…

A: Given :- mass of ZnS = 50.0 g  To calculate :- mass of ZnO (in g)  Molar mass of ZnS = 97 g/mol…

Q: cA Exactly 65.00 mL of a 0.3103 M solution of Naz SO3 were treated with 190.0 mL of 0.4075 M HC10,…

A: Click to see the answer

Q: Analysis of Fat in Potato Chips Video Experiment: A sample of potato chips weighing 6.18 g was…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: What is the theoretical yield of Hg2Cl2 when 3.0 mL of 0.25 MKCI is mixed with excess Hg2(NOs)2?

A: Volume of KCl = 3 ml = 3/1000 L = 0.003 L Molarity of KCl = 0.25 M

Q: Is it possible to have no limiting reagent?

A: Is it possible to have no limiting reagent has to be given.

Q: A 0.4550-g solid mixture containing CaCl2 is dissolved in water and treated with an excess of…

A: Given information,    0.4550-g solid mixture containing CaCl2 is dissolved in water and treated with…

Q: 1. A groundwater contains the following constituents: CO2 = 9.6 mg/L Ca2+ = 95.2 mg/L Mg2+ = 25.8…

A: The total hardness (TH) is calculated as follows: TH = Ca+2 concentration×Eq.Wt of CaCO3Eq.Wt of…

Q: A 13.82 gram sample of commercial vinegar being shipped to your salad dressing manufacturing plant…

A: From given datas  Initially we are calculating % of acid (in vinegar) and from that actual value we…

Q: 5. In the commercial preparation of Hydrogen Chloride, what weight of HCl in grams may be obtained…

A: The reaction for the preparation of hydrogen chloride is as follows: 2NaCl + H2SO4 → NaSO4 + 2HCl…

Knowledge Booster
Recommended textbooks for you
  • Chemistry
    Chemistry
    ISBN:9781305957404
    Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
    Publisher:Cengage Learning
    Chemistry
    Chemistry
    ISBN:9781259911156
    Author:Raymond Chang Dr., Jason Overby Professor
    Publisher:McGraw-Hill Education
    Principles of Instrumental Analysis
    Chemistry
    ISBN:9781305577213
    Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
    Publisher:Cengage Learning
  • Organic Chemistry
    Chemistry
    ISBN:9780078021558
    Author:Janice Gorzynski Smith Dr.
    Publisher:McGraw-Hill Education
    Chemistry: Principles and Reactions
    Chemistry
    ISBN:9781305079373
    Author:William L. Masterton, Cecile N. Hurley
    Publisher:Cengage Learning
    Elementary Principles of Chemical Processes, Bind...
    Chemistry
    ISBN:9781118431221
    Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
    Publisher:WILEY
  • Chemistry
    Chemistry
    ISBN:9781305957404
    Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
    Publisher:Cengage Learning
    Chemistry
    Chemistry
    ISBN:9781259911156
    Author:Raymond Chang Dr., Jason Overby Professor
    Publisher:McGraw-Hill Education
    Principles of Instrumental Analysis
    Chemistry
    ISBN:9781305577213
    Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
    Publisher:Cengage Learning
    Organic Chemistry
    Chemistry
    ISBN:9780078021558
    Author:Janice Gorzynski Smith Dr.
    Publisher:McGraw-Hill Education
    Chemistry: Principles and Reactions
    Chemistry
    ISBN:9781305079373
    Author:William L. Masterton, Cecile N. Hurley
    Publisher:Cengage Learning
    Elementary Principles of Chemical Processes, Bind...
    Chemistry
    ISBN:9781118431221
    Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
    Publisher:WILEY