Calculate the vapor pressure (in mmHg) above of solution containing 50.0 g of ethylbromide (CH3CH2Br) and 19.964 g of 1,2-ethanediamine (NH2CH2CH2NH2) at 21.0oC.  The vapor pressure of ethyl bromide at 21.0oC is 400 mmHg.  The vapor pressure of 1,2-ethanediamine at 21.0oC is 10.0 mmHg.  Your answer should have 3 significant figures.

Q: In a solution of acetone and water, the mole fraction of water is 0.567. If the vapor pressure of…

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Q: Find the molar mass of the dissolved organic substance as the vapor pressure of the solution…

A: When a non volatile solute is added to a volatile solvent, vapour pressure of later decreases.

Q: The vapor pressure of pure water at 20 ºC is 17.54 torr.  What will the vapor pressure of water be…

A: Given, VAPOUR pressure of pure water , P° = 17.54 torr  Mole fraction , X = 0.476

Q: 1.Assume that the measured freezing point of pure cyclohexane using your thermometer was 6.0 °C. A…

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Q: A chemist wants to determine the molar mass of a naturally occurring substance isolated from…

A: Given, Pressure of the solution, Psolution = 0.2464 atmPressure of the Acetone, Pacetone = 0.2630…

Q: The Henry’s Law constant kH for O2 in water at 20°C is 1.28x10^-3 mol/L x atm How many grams of O2…

A: KH = 1.2810-3 mol/LatmP(O2) = 1.70 and 0.269 atmVolume(V) = 3.50 Lmolar mass of O2 = 32.00 g/mol

Q: Calculate the vapor pressure at 85.0°C of a solution prepared by dissolving 0.200 mol of liquid…

A: The vapor pressure of a solution at certain temperature is equal to the sum of vapor pressure of…

Q: How many moles of sugar must be dissolved in 2.00 liters of pure water to raise its boiling point to…

A: Given  Volume of solution                 = 2 Liter  Elevation in Boiling point       = 102 ℃  Molal…

Q: Students are investigating a solvent for use in freezing point depression experiments. They measured…

A: Given : Freezing point of solvent = -12.6 oC Freezing point of solution = -18.3 oC Mass of solute…

Q: f ethanol (C2H5OH) and 1-propanol (C3H7OH) at 70oC are 645 mmHg and 492 mmHg respectively. Using…

A: Firstly calculate the mole fraction of ethanol and propanol.  a) mol of Ethanol = ( 25g /…

Q: 1. Calculate the vapor pressure (P₁) and the vapor pressure lowering (AP) for a solution of 95.0g of…

A: Raoult's law : It states that a solvent's partial vapour pressure in a solution is equal to the…

Q: Students are investigating a solvent for use in freezing point depression experiments. They measured…

A: Depression in freezing point  (∆Tf) :- When a non volatile solute is added to a pure solvent it's…

Q: A 0.400-g sample of an unknown compound is dissolved in 20.0 mL of cyclohexane (density = 0.779…

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Q: The vapor pressure of several solutions of water-propanol (C3H;OH) were determined at various…

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

Q: Determine the freezing point of a solution that contains 75.9 g of rhophthalene (C11H7) dissolved in…

A: mass of rhophthalene (C11H7) = 75.9 gVolume of rhozene = 739 mLDensity of rhozene = 0.83…

Q: Establish the total vapor pressure (in torr) over a solution containing 100 g of heptane and 456.92…

A: Given: Mass of heptane i.e. C7H16 = 100 g. Mass of octane i.e. C8H18 = 456.92 g. Vapor pressure of…

Q: dissolving 4.555 g of ZnSO 4 in 150.0 g of water? The freezing point constant of water is 1.86…

A: We have to calculate the decrease in freezing point of the guven solution

Q: Calculate the boiling point of a solution containing 25.0g of urea, (H2N)2CO(s), dissolved in 1.50kg…

A: Given, Mass of urea = 25.0 g Mass of nitrobenzene = 1.50 Kg The boiling point elevation constant…

Q: The vapor pressure of water at 25C was 23.8 torr. Calculate the final pressure of the water if a…

A: Given,  Vapour pressure of water at 25 °C = 23.8 torr  P°solvent = 23.8 torr   We have to calculate…

Q: What would be the theoretical freezing point of a solution made by dissolving 5.551 g of CrSO 4 in…

A: Depression of freezing point is a colligative property which depends upon the concentration of…

Q: A 132 g sample of a nonvolatile compound was dissolved in 4.30 mol of cyclohexane (P° = 100.0 mmHg).…

A: Given data: The mass of the sample (solute)=132 g. The moles of cyclohexane (solvent) n2=4.30 mol.…

Q: 1.86 g of unknown C were dissolved in 8.00 ml of water in a large test tube. The test tube was…

A: Colligative properties: The colligative properties are those properties of solutions that depend on…

Q: 67. The boiling point of Chloroform was raised by 0.325K when 5.141 × 10 kg of a non- volatile…

A: Colligative properties are properties of a solution that depend on the number of solute particles…

Q: Calculate the freezing point of a solution made by adding 16.43 g of a nonelectrolyte (125.5 g/mol)…

A: Molality is the number of solvent moles per kilogram.Molality is also known as molal concentration.…

Q: Students are investigating a solvent for use in freezing point depression experiments. They measured…

A: On adding non-volatile solute to pure solvent, the freezing    point of the solution becomes…

Q: A solution is made by mixing 56.7 g acetone and 56.7 g methanol . What is the vapor pressure of this…

A: When two or more than two liquid components or solid in liquid, are mixed, it results in the…

Q: The vapor pressure of solvent X is 56 mmHg at 30°C. When 0.5 moles of solute Y (58 g/mol) is added…

A: Here we are required to find the vapour pressure of the solution.

Q: A solution consisting of 0.278 mol of methylbenzene, C6H5CH3, in 244 g of nitrobenzene, C6H5NO2,…

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Q: Consider that a solution is formed from a mixture of the nonvolatile solute, urea, CO(NH2)2, and…

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Q: A solution of 75.0 g of benzene (C6H6) and 75.0 g of toluene (C7H8) has a total vapor pressure of…

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Q: Calculate the freezing point and the boiling point at 1 atm of a solution containing 30.0 g of cane…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: At 40°C, the vapor pressure of pure carbon tetrachloride(CCl4) is 0.293 atm and the vapor pressure…

A: nCCl4 = 30.0 g ×1 mol153.8g           =0.195 mol

Q: Glycerin (C3H8O3) density is 1.260 g/mL at 25.00 oC.  Calculate the vapor pressure at 25.00 oC of a…

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Q: The addition of 0.125 g of an unknown, non-ionic compound to 100 g of cyclohexane lowered the…

A: The lowering in freezing point is given by ( for non ionic compounds)  lowering in freezing point =…

Q: A solution is made by dissolving 40 g of ethylene glycol(C2H6O2; 62 g/mol) in 150 mL of H2O (d=1…

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Q: The vapor pressures of pure benzene and pure toluene at 25°C, are 95.1 and 28.4 mmHg, respectively.…

A: Given:Vapor pressure of pure benzene = 95.1 mm HgVapor pressure of pure toluene = 28.4 mm HgMole…

Q: b. A solution contains 10.00 g of a non-volatile hydrocarbon in 100.0 g of acetone. Th boiling point…

A: The question is based on the concept of solutions.   Molality is a method of expressing…

Q: Liquid-liquid solutions are considered ideal if their vapor pressures obey Raoult’s law. A…

A: According to Dalton law of partial pressure the total pressure of solution in container is equal to…

Q: When 252. g of alanine (C₂H₂NO₂) are dissolved in 1400. g of a certain mystery liquid X, the…

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Q: The vapor in equilibrium above a hexane-pentane solution at 25.0°C has a mole fraction of hexane…

A: Components of solution : hexane and pentane. Mole fraction of hexane in vapor phase (y1) = 0.70…

Q: A student prepares a solution by dissolving 2.09 g of para-dichlorobenzene (C6H4Cl2,= 147.0 g/mol)…

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Q: A solution contains 10.00 g of a non–volatile hydrocarbon in 100.0 g of acetone. The boiling point…

A: One of the colligative propert accounts for the change in Boiling point i.e. Elevation in Boiling…

Q: At 20°C, the vapor pressure of pure ethanol, C2H5OH, is 43.7 mmHg and the vapor pressure of pure…

A: Given that , Vapour pressure of the solution= 28.6 mmHg Vapour pressure of pure ethanol = 43.7 mmHg…

Q: Both benzene (C6H6) and carbon tetrachloride (CCl4) are volatile organic liquids. When 1.68 mole of…

A: Given information is as follows: The moles of solute C6H6 = 1.68 mol The moles of solvent CCl4 =…

Q: You are a forensic chemist and vou are given a white powder to analyze. You take a 0.25- g sample of…

A: Given that 0.25 g of a sample is dissolved in 4.0 g of a benzene.Freezing point of the solution is…

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.