3.1 The boiling point of pure toluene is 111.01 °C, and its Kap is + 3.29 °C. kg. mol-. A 0.448 g sample ofa human hormone is dissolved in 10.0 g of toluene, and the solution boils at 111.20 °C.Determine the molar mass of the hormone.(You may assume that the hormone is a non-electrolyte).Estimate the osmotic pressure (in kPa) of a 0.145 M solution of A(NO:); at 25.0 °C3.2

In this first Question ( 3.1 ) we will see how to calculate the molar mass of the hormone. You can…

The boiling point of pure toluene is 111.01 °C, and its Ke, is + 3.29 °C. kg. mol-. A 0.448 g sample of a human hormone is dissolved in 10.0 g of toluene, and the solution boils at 111.20 °C. 3.1 Determine the molar mass of the hormone. (You may assume that the hormone is a non-electrolyte).

The boiling point of pure toluene is 111.01 °C, and its Ke, is + 3.29 °C. kg. mol-. A 0.448 g sample of a human hormone is dissolved in 10.0 g of toluene, and the solution boils at 111.20 °C. 3.1 Determine the molar mass of the hormone. (You may assume that the hormone is a non-electrolyte).

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter16: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 114CP: Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution...

See similar textbooks

Related questions

Q: Insulin is a hormone responsible for the regulation of the glucose levels in the blood. An aqueous…

A: Relation between osmotic pressure and concentration is given below. π=CRT Here π is an osmotic…

Q: 1. A solution is made by mixing 300 g of sucrose in 900 ml of pure water to produce a solution with…

Q: Adding 1.56 g of K2SO4 to 6.00 mL of water at 16.2ºC causes the temperature of the solution to drop…

A: Given : Mass of K2SO4 added = 1.56 g Volume of water = 6.00 mL Drop in the temperature of initial…

Q: Calculate the molality of a sucrose solution made by dissolving 39.5 grams sucrose into 99.6 grams…

Q: Colligative Properties The actual freezing point of ethanol is -117.30 C. How many grams of a…

Q: What mass of silver nitrate will precipitate out of solution if 950.0g of silver nitrate is…

A: Given data,Mass of AgNO3=950gMass of water=225gInitial temperature=50oCFinal temperature=20oC

Q: sThe enthalpy of solution for solid KClO3 is 41.4 kj/mol If certain amount of solid potassium…

A: The solution temperature decreases when KClO3 dissolves in water.

Q: Lake Titicaca is situated at an altitude of 3810 m in the Bolivian Andes. Calculate the solubility…

Q: In the following reaction calculate and find the normality when it is 1.0 M H3PO4 H3ASO4 + 2NAOH -…

A: If H3PO4 used,then H3PO4 +NaOH-Na2HPO4+ 2H2O In the above equation replacable Hydrogen atom=2…

Q: 1. What is the concentration of a solution of sodium carbonate containing 26.5 g of solute in 500 ml…

Q: Molality of iron(II) chloride in a solution is 3.958 mol·kg-1. What is the mole fraction of FeCl2 in…

A: Molality of FeCl2 is 3.958 molkg-1 it's meaning is 3.958mol FeCl2 dissolved in 1kg of water So,…

Q: The boiling point of an aqueous solution containing a nonvolatıle electrolyte is 100.75°C. a. What…

A: The boiling point of water along with the electrolyte is given. T=100.750C Elevation in boiling…

Q: The boiling point of chloroform, CHC13, is 61.700 °C at 1 atmosphere. K(chloroform) = 3.67 °C/m In a…

A: Elivation in boiling point ∆Tb = i x Kb x m where ∆Tb = Ts - To i = 1 ( non electrolyte solute)m…

Q: A geochemist in the field takes a 22.0 mL sample of water from a rock pool lined with crystals of a…

Q: 0.9% (w/v) sodium chloride (MW = 58.44 g/mol) solution (Normal Saline Solution) has an osmotic…

Q: he solubility of glucose is 357g/100g H20 at 70C. A solution is prepared by mixing 300g of glucose…

A: Solubility is the ability of a solid, liquid, or gaseous chemical substance to dissolve in solvent…

Q: In an coffee cup calorimeter experiment, sodium hydroxide (7.17 g) was dissolved in water (86.6 g).…

A: Enthalpy of solution :- It is the amount of heat released or absorbed in the system…

Q: The vapor pressure of ethanol is 58.7 torr at 25 °C. Determine the vapor-pressure lowering, ΔP, of…

Q: The enthalpy of solution for ammonium perchlorate NH4 CIO, is +33.47 kJ/mol. How many grams of…

Q: Calculate the freezing point of a solution containing 0.600 kg of CHCl3 and 42.0 g of eucalyptol…

A: Freezing point: The temperature at which a liquid turns into a solid. The formula for calculating…

Q: Common commercials acids and bases are aqueous solutions with the following properties:…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: When 1.18 g of KClO3 was added to 149.35 g of water in a calorimeter, the temperature dropped by…

A: Given:Mass of water = 149.35 g.Mass of KClO3 = 1.18 g.specific heat of the solution = specific heat…

Q: What is the molality of a solution

A: Molality = number of moles of solute/mass of solvent in kilogram Number of moles = mass/molar mass

Q: The enthalpy of solution for potassium perchlorate - KCIO4 is +51.04 kJ/mol. How many grams of…

Q: 400 g of baking soda (solid) and 9 kg of vinegar (liquid) mixture react to form 269 g of sodium…

A: molality is defined as no.of moles of solute devided by mass of solvent in kg

Q: Calculate the boiling point of a mixture where 70.6 g of formic acid, H,CO,, is dissolved in 250 g…

A: Boiling point of solutions is greater than boiling point of solvent

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

Q: The initial freezing temperature of 0.13 kg of a pure solvent is 6°C. 15.0 grams of a solute with…

A: Given: Freezing point of pure solvent = 6 oC Mass of solute added = 15.0 g Molar mass of solute =…

Q: The dissolution of NH4 ClO4(s) in water is endothermic with Delta H solution =33.5 kf/mol. if you…

A: Concentration of solution = 1 m 1 Molal solution = 1 mole of solute in 1 kg of water Mass of 1 mole…

Q: During the 9.9 SALE, Otis purchased 1.0 gallon (4.55 L) of antifreeze containing 3.78 L of ethylene…

A: 1. Molality or molal concentration is defined as the number of moles of solute present per kg of…

Q: he common laboratory solvent chloroform is often used to purify substances dissolved in it. The…

A: Relative lowering in the vapor pressure of a solution is a colligative property that depends on the…

Q: A mixture is made by mixing equal volumes of corn syrup (d = 1.4 g/mL, C6H14O7) and water (d = 1.00…

Q: Crude oil pumped out of the ground may be accompanied by formation water, a solution that contains…

A: This question belongs to the colligative properties (elevation in boiling point), which states that…

Q: The normal boiling point of chloroform CHCl3 is 61.700 °C and its Kbpvalue is 3.67 °C/m. In a…

A: The elevation in boiling point can be calculated as follows,

Q: Crude oil pumped out of the ground may be accompanied by formation water, a solution that contains…

Q: A 1.358 g sample contains only vitamin C (C6H8O6) and sucralose (C12H19Cl3O8). When the sample is…

Q: Silver nitrate has a lattice energy of -8.20X102 kJ/mol and a heat of solution of +22.6kJ/mol.…

A: Heat of solution(∆Hsolution): It can be defined as the heat released or absorbed when 1 mol solute…

Q: 400 g of baking soda (solid) and 7 kg of vinegar (liquid) mixture react to form 192 g of sodium…

A: The number of moles of baking soda can be determined as follows: Number of moles of NaHCO3 = Given…

Q: The vapor pressure of pure "Freon 11" and pure "Freon 12" at 25°C. Are 15 lb/in2 and 85 lb/in²…

A: Solution - According to the question - Given - then mol of freon-12 = 1 mol so that ratio is 0.6…

Q: Your pure water boils at 100.00 C. You add some sugar into it and now it boils at 101.20C. What is…

A: Given, Boiling point of pure water, Tb° = 100.00 °C Boiling point of solution, Tb = 101.20 °C Kb…

Q: An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (SG= 1.114; MW =…

A: Volume percent: As there are equal volumes of two solutions. The volume percent would be 50% for…

Q: Given that the Kf for t-butyl alcohol is 9.01 degrees celcius/m, and that the freezing point of pure…

A: Depression in freezing point can be determined using Kf and molality of solution.

Q: At 25°C and 1 atm, 70.80 g of sucrose (C12H22O11, sugar, MM = 342.30 g/mol) is dissolved in 100.0 g…

Q: What molality of nonvolatile solute is needed to lower the melting point of camphor by 1.050°C? (Kf…

A: Depression in freezing point: The depression in freezing point of a solution is directly…

Q: 1. What is the molality of a solution containing 48.2g of CaO in 392g of solvent? 2. What is the…

A: Given data: 1) Weight of CaO = 48.2 g Weight of solvent = 392 g 2) Moles of solute = 4.79 moles…

Q: Calculate the molality of a sucrose solution made by dissolving 26.8 grams sucrose into 93.6 grams…

A: Molality(m). It is defined as number of moles of solute dissolved in per kilogram of solvent.

Q: Solubility of glucose, C6H1206, in water is 120 g glucose / 100 g H2O at 30 °C. The following…

A: Solution (i) Mass of solution = 100 gm Mass of glucose = 45 gm Moles of glucose = weight / molar…

Q: The freezing point of a 0.01 m aqueous solution of a nonvolatile electrolyte is -0.0720C. What is…

A: The freezing point, Tf , of 0.01 m solution is -0.072o C. As the solution is aqueous, that is the…

Q: Commercial concentrated Hydrochloric acid is 11.8 M HCl and has a density Of 1.190 g / mL .…

A: Given data: Molarity of HCl = 11.8 M Density of HCl = 1.190 g/mL Formula used: Mass%=Mass…

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

3.1 The boiling point of pure toluene is 111.01 °C, and its Kap is + 3.29 °C. kg. mol-. A 0.448 g sample of
a human hormone is dissolved in 10.0 g of toluene, and the solution boils at 111.20 °C.
Determine the molar mass of the hormone.
(You may assume that the hormone is a non-electrolyte).
Estimate the osmotic pressure (in kPa) of a 0.145 M solution of A(NO:); at 25.0 °C
3.2

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 5

Step by step

Solved in 5 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

Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25C. The vapor above the solution is collected and condensed. Using the following data, determine the composition in mole fraction of the condensed vapor. Substance Gfo C6H6(l) 124.50 kJ/mol C6H6(g) 129.66 kJ/mol CCI4(l) 65.21 kJ/mol CCI4,(g) 60.59 kJ/mol
If 0.219 g of a solute is dissolved into 7.832 g of t-butanol (normal freezing point is 25C), and the solution freezes at 26.4C, what is the molar mass of the solute in g/mole? Given kf for t-butanol = 8.3C/m. Make sure to use correct units and sig figs.
In a laboratory experiment, students synthesized a new compound and found that when 10.28 grams of the compound were dissolved to make 170.9 mL of a ethanol solution, the osmotic pressure generated was 5.40 atm at 298 K. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound? g/mol
State your basis and show calculations. (Kf,water = 1.86 K kg mol-1) NaCl, MgCl2, and CaCO3 are candidate salts in the homemade ice cream-making process. The salts are to be dissolved in the ice-water mixture to lower the temperature of the mixture. The mixture will be then used to freeze ice cream. Which salt will be much more effective in lowering the temperature of the ice-water mixture considering that equal masses of each salt are to be compared?
What is the osmotic pressure (at 20 °C) of a solution made by dissolving 13g of sucrose in 117g of water? The total volume of the solution is 125mL at 20 °C.A. 7.31 atmB. 0.30 atmC. 342 atmD. 0.08 atm A solution contains 3.86g of magnesium chloride and 250g of water. Compute for the freezing point depression of the solution. (Kf water: 1.86 °C/m)A. 0.16 °CB. 0.25 °CC. -0.25 °CD. -0.90 °C
In a laboratory experiment, students synthesized a new compound and found that when 13.21 grams of the compound were dissolved to make 216.6 mL of a ethanol solution, the osmotic pressure generated was 1.67 atm at 298 K. The compound was also found to be nonvolatile and a non-electrolyte.What is the molecular weight they determined for this compound?
A student using a calibrated solution calorimeter measured a temperature decrease of 1.10 K when 1.00 g of KNO3 was added to 74.40 g of deionized water in the calorimeter. The specific heat capacity of the solution calorimeter was found to be 4.15 J/gK. Calculate the experimental value of the molar heat of solution of KNO3, ΔH soln. Was the dissolution of this salt exothermic or endothermic?
The dissolution of NH4 ClO4(s) in water is endothermic with Delta H solution =33.5 kf/mol. if you prepare a 1.00 m solution of NH4ClO4 beginning with water at 25 ° C what is the final temperature of the solution in ° C ? Assume that the specific heats of both pure water and the solution are the same , 4.18J/g.K.
In a laboratory experiment, students synthesized a new compound and found that when 11.40 grams of the compound were dissolved to make 160.5 mL of a ethanol solution, the osmotic pressure generated was 6.03 atm at 298 K. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound?
(i) Gas (A) is more soluble in water than Gas(B) at the same temperature. Which one of the two gases will have the higher value of KH(Henry’s constant) and why?(ii) In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?
Aniline (C6H7N) is an organic solvent with a freezing point of -6.0 °C. What is the freezing point, in °C, of a solution formed by the addition of 3.88 g of Thymol Blue (C27H30O5S), a non-volatile non-electrolyte, to 16.0 g of aniline? The Kf for aniline is 5.23 °C/molal. Assume ideal behavior.
Colligative Properties The freezing point of carbon tetrachloride (CCl4) is -23.0C. When a nonvolatile solute is added to this solvent, the temperature decreased to -26.7C. If the molality of the resulting solution is 0.124, what is the kf for CCl4?