15 g of unknown organic sample was dissolve in 575 mL of Dicloromethane (DCM). The boiling point of benzene was increased by 3.40oC. Determine the molecular weight of the unknown sample? Kb of DCM = 2.42oC/m Bb of benzene = 39.6 oC density of benzene = 1.33 g/mL at 25 °C

15 g of unknown organic sample was dissolve in 575 mL of Dicloromethane (DCM). The boiling point of benzene was increased by 3.40oC. Determine the molecular weight of the unknown sample? Kb of DCM = 2.42oC/m Bb of benzene = 39.6 oC density of benzene = 1.33 g/mL at 25 °C

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter13: Solutions And Their Behavior

Section13.5: Colloids

Problem 1.2ACP: How many theoretical plates are required to produce a solution with a mole fraction of hexane...

See similar textbooks

Related questions

Q: 2. For each of the following, describe the relationship as directly or inversely proportional: a)…

A: * Wavelength is define as the distance between two adjacent crest or trough. * Frequency is the…

Q: 218- E B 0.006- A 0.01 100 374 Temperature (°C) vap(atm)

Q: (iv) [(n²-C3H;)(n°-C3H3)M(CO)]"

Q: A first-order reaction is 40.0% complete at the end of 39.1 minutes. What is the value of the rate…

A: Given reaction is 40% completed hence remaining concentration is 60%

Q: How is pH and pOH calculated?

A: pH describes the potential of H+ in a solution. pH is calculated using the following equation…

Q: Which of the following was used in excess in the gravimetric method of analysis experiment? BaCl,…

A: The correct answer about gravimetric analysis is given below

Q: 5. Consider the following sets of replicate measurements: *A в *C D "E F 0.514 0.503 0.486 2.7 70.24…

Q: Which of the following 0.05 M aqueous solutions will have the highest boiling point? Potassium…

Q: A student attempts to determine the molecular weight of an unknown liquid with a boiling point of…

A: Given that - Boiling point of unknown liquid = 79.6°C While lowering the vapour pressure,…

Q: A 250. mL aqueous solution prepared by dissolving 55.0 g of a non-electrolyte solute had a freezing…

A: Depression in freezing point describes that the freezing point of a liquid (a solvent) is epressed…

Q: 1) so, / HSO. What is the major product of the following reaction : so,H 2) Ch / Feci, so,H so,H CI…

A: --> Benzene can give electrophilic aromatic substitution reaction. ->SO3/H2SO4 is reagent for…

Q: The force constant for a H"F molecule is 966 N m, and with a bond length of 91.7 pm, rotates in a…

A: The energy of a rigid-rotor for a diatomic molecule is given as: E(J)=h28π2IJ(J+1)

Q: A healthful diet should have a distribution of macronutrients. In the following, match the caloric…

Q: What is the ΔHfus of ethanol (46.06 g/mol) which has Kb of 1.99 and freezes at -117.3 °C?

Q: NO2 N. CH3 CH3 CH3 H3C

A: 13 C NMR spectroscopy is the application of NMR spectroscopy to carbon . 1H NMR spectroscopy is the…

Q: 22. A 0.716 mole sample of gas is kept under 875 torr pressure and occupies 6.0 L of space. What…

Q: Using net ionic equations and solution stoichiometry, calculate the molarity of the principal…

Q: A solution contains a mixture of Na2CO3 and NaOH. Using phenolphthalein indicator 25 ml of mixture…

Q: 23. What volume of carbon dioxide gas at STP could be produced from the decomposition of 150.0 grams…

A: ★ Answer : 33.55 Litres CO2 gas will be produced at STP from the decomposition of 150g CaCO3. ★…

Q: 1. As shown, silicon for computer chips is grown in large cylinders called "boules" that are 300 mm…

A: a) Length of the Si boule = 2m = 2000 mm Thickness of the wafers = 0.75 mm Number of wafers that…

Q: A solution was prepared by dissolving 12.0 g of glucose (180 g/mol) in 150. mL solution. What is the…

A: Freezing point of solvent is greater than freezing point of solution

Q: Consider a solution consisting of 1.75 mol water and 0.97 mol ethanol. What is the Gibbs energy of…

A: Here we are required to find the Gibbs energy of mixing when water and ethanol are mixed

Q: Question 9 Consider a solution consisting of 1.75 mol water and 0.97 mol ethanol. What is the Gibbs…

A: Number of moles of water = 1.75 moles Number of moles of ethanol = 0.97 moles Gibbs energy of…

Q: What is the equilibrium-constant expression of the basic dissociation of NaNO2? Kb =…

A: Given-> NaNO2

Q: 17.55 g of an unknown compound decreased the freezing point of 138 g of benzene (Kf= 5.12 ∘C /m) by…

A: Detail mathematical calculation is shown below

Q: 15. How many moles are in a 675 mL sample of gas at 313 K and 1.65 atm?

A: • The values provided in the question are:- i) Pressure of a sample of gas, P = 1.65 atm…

Q: Provide an IUPAC name for the structure shown. H

A: 1. Select the principle carbon chain 2. Numbering 3. Naming (prefix + word root + suffix)

Q: 3. Predicting Products: Draw the structures of the major organic reagents / products of the reaction…

A: Note : Free radical substitution reaction under light ( see below).

Q: TIK |210 Compositon of one phase P.1 Vapour 292 290 P+2 Composton fsecond phase P2 Liquid 273 P.1…

Q: The property of the solution remains constant even if its composition varies. True False

A: Solution is made up of two components: solute and solvent. Solvent is present in major amount and…

Q: The graph shows the titration of the aqueous solution containing 0.138 g of unknown monoprotic acid…

A: For a monoprotic acid and NaOH , first we right a balanced reaction. At equivalence point , acid and…

Q: 180.37 mL of 1.10 M organic salt was mixed with 185.23 mL of Ethanol (d= 0.789 g/mL, MW…

Q: R `OOH

Q: ll. Direction: Carefully read the following problems. Do the following : D. Determine the percentage…

A: Given the balanced Chemical equation - C7H6O3(s) + C4H6O3(l) ------> C9H8O4(s) + CH3COOH(l)…

Q: Based on the ternary phase diagram, a binary mixture of furfural and water will always split into…

Q: Use the proper graphing techniques to find the equivalence and half-equivalence points and determine…

Q: Why does the concept of colligative properties apply only to dilute solutions? Eugenol is the active…

A: 1. Answer. : Colligative properties are properties of solutions that depend on the number of…

Q: Give some examples of gas in liquid solutions and their primary solute and solvent.

A: There are 3 states of matter: solid, liquid and gas. In many cases the same element can exist in all…

Q: Mass =

Q: How many Calories (nutritional Calories) does 16.4670 pounds of fat have? Show dimensional analysis,…

A: 1 pound of fat = 3500 calories

Q: 5. What volume will 400. mL of SO3 at 0°C and 760 mm Hg occupy at 110. °C when the pressure remains…

Q: What is the percent of chloride ion in a sample if 2.500 g of the sample produces 1.750 g of AgCl…

Q: The densities of aqueous solutions of copper (II) sulfate at 20 °C were measured as set out below.…

A: Molar mass of copper sulfate MW(CuSO4)=159.6 g/mol Moles n1 = mass1 / Molar mass = 52.6 / 159.6 =…

Q: (a) Determine the valence electron counts on the transition metals. Find out the formal oxidation…

A: Here we are to find the valence electron count as well as the formal oxidation state of the metal.

Q: A buffer solution is made that is 0.475 M in HNO2 and 0.475 M in KNO2. If Ka for HNO2 is 4.50 x 10…

Q: On the illustration of a generic cell for In/Zn electrodes immersed in their salt solutions Use the…

Q: Given the volume of 0.4810 M NaOH used determine the concentration of 19 ml sample each from…

A: Given that, The concentration of the NaOH is 0.4810 M. The volume of the aqueous layer and the…

Q: For each of the following reactions, (i) write an equation, (ii) determine what is oxidized and what…

Q: 2. Determine the molecular weight (molar mass) of gases at STP which have densities C a. 0.090 g/L…

A: At STP -> T = 273 K P = 1 atm

Q: 9. (a) How supramolecule is formed and what are the basic functions of supramolecule.

A: Please find your solution below : Suramolecule is a well defined complex molecule composed and…

Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

15 g of unknown organic sample was dissolve in 575 mL of Dicloromethane (DCM). The boiling point of benzene was increased by 3.40^oC. Determine the molecular weight of the unknown sample?

Kb of DCM = 2.42^oC/m

Bb of benzene = 39.6^oC

density of benzene = 1.33 g/mL at 25 °C

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

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps

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

The blue line on the diagram illustrates the effect of using fractional distillation to separate a mixture of hexane (C6H14) and heptane (C7H16). If one starts a fractional distillation with a 0.20 mole fraction of hexane, what is the approximate mole fraction of hexane in the vapor phase after two evaporation condensation cycles? Figure B A temperaturecomposition diagram for hexane (C6H14)-heptane (C7H16) mixtures.
The solubility of suberic acid C6H12(COOH)2 is 0.14 g/100 ml H2O and 0.56g/100 ml ethyl ether at 15 0C. Calculate the weight of suberic acid removed from 50 ml aqueous solution containing 40 mg acid by extraction with 50 ml ether. Calculate the weight of acid that would be removed by two successive 25 ml extraction with ether.
The partial molar volumes of acetone and chloroform, in a solution in which the molar fraction of chloroform is 0.4693, are 74.166 cm3mol-1 and 80.235 cm3 mol-1, respectively. What is the volume of 1,000 kg of this solution? Data: M.M. (acetone) = 58.08 gmol-1; M.M. (chloroform) = 119.07 gmol-1.
If you know that sodium bicarbonate has a solubility of 8.4 g in 100g water at 18 °CI. Calculate (a) the molarity and (b) the molality of 8.4 g of Sodium bicarbonate in water II. if you had 200 mls of water, what is the minimum amount of Sodium bicarbonate that you will require to achieve supersaturation? III. If 150 mls of a stock solution of sodium bicarbonate having a concentration of 0.5 M was diluted to 300 mls. What will be the final concentration of the diluted solution?
A student dissolved 20 mg of caffeine in 20 mL of water. The student carried out two extractions using 20 mL of dichloromethane in each one. Caffeine solubility in water: 2.17 g / 100 mL at 25 ° C Caffeine solubility in dichloromethane: 10.0 g / 100 mL at 25 ° C Present the calculations in detail below. A. Determine the distribution coefficient. b. Determine the amount of caffeine obtained in the first extraction. C. Determine the amount of caffeine obtained in the second extraction. 77 D. Determine the total amount of caffeine extracted during the entire process. and E.Determine the percent recovery.
What will be the new boilng point of 498ml benzene (Kb = 2.53 oC•Kg/mol; Bp = 80.1oC) when mixed with 18g of naphthalene (MW = 128.17 g/mol) to make a non- eletrolyte solution? Density of benzene = 0.876 g/ml)
Students were tasked to conduct a recrystallization experiment to test the ability of the newly discovered solvents in their laboratory to purify and separate a mixture containing compounds X and Y. The solubility of the two compounds in g/50 mL of hot and cold solvents are given by the photo.
An impure sample of 130 mg of adipic acid was dissolved in 1.0 mL of boiling water. What is the maximum amount of recoverable adipic acid at 0 oC? Solubility of adipic acid at 0 oC is 0.3 g/ 100 mL Group of answer choices 124 mg 3 mg 127 mg 130 mg
The distribution coefficient, KD (C ether/C water), between ether and water for aspirin at room temperature is 3.5. What weight of aspirin would be extracted by a single extraction with 150 mL of water from a solution of 10 gms of aspirin in 100 mL of ether? Calculate the weight of aspirin which would be removed by three extractions with 50 mL portions of water.
An impure sample of 250 mg of adipic acid was recrystallized from 2.0 mL of boiling water. The solution was cooled to room temperature slowly and further cooled in an ice bath. What is the maximum amount of recoverable adipic acid at 0 oC? Solubility of adipic acid at 0 oC is 0.3 g/ 100 mL Group of answer choices 6 mg 249 mg 244 mg 250 mg
The distribution coefficient, KD (ether/water), between ether and water for aspirin at room temperature is 3.5. What weight of aspirin would be extracted by a single extraction with 60 ml of water from a solution of 10 grams of aspirin in 100 ml of ether? Calculate the weight of aspirin which would be removed by three extractions with 20 ml portions of water.
50 ml of 10% Acrylamide, 0.05% BIS, 0.1M Tris-HCl pH 8.9. You have 0.5L of each of the following: 40% (w/v) Acrylamide, 2% (v/v) Bis and 2M Tris-HCl pH 8.9. Determine how much you need of each stock solution and dH2O to prepare the desired 50ml mix.