The freezing point of 58.53 g of a pure solvent is measured to be 44.17 ºC. When 2.15 g of an unknown solute (assume the van 't Hoff factor = 1.0000) is added to the solvent the freezing point is measured to be 41.26 ºC. Answer the following questions ( the freezing point depression constant of the pure solvent is 7.77 ºC·kg solvent/mol solute). What is the molality of the solution? m How many moles of solute are present? mol What is the molecular weight of the solute? g/mol

Q: The normal freezing point of ethanol (CH3CH2OH) is -117.300 ºC.  In a laboratory experiment,…

A: The freeing point depression is observed on the addition of solute in a solvent, which is a…

Q: The normal freezing point of a certain liquid X is -2.7 °C, but when 12.2 g of urea ((NH,),CO) are…

A:

Q: The vapor pressure of pure acetone, (CH3)2CO, at 25C is 229 torr. A.) Calculate the vapor pressure…

A: According to the question, Vapour pressure, also known as vapour equilibrium pressure, is the force…

Q: What is the freezing point depression constan

A: Depression in freezing point is the result of adding a solute to a solvent.  When a substance starts…

Q: The normal freezing point of cyclohexane is 6.50 °C. A solution is prepared by dissolving 258.0 mg…

A: Here the solvent is cyclohexane whose Kf value is 20.0 oC/m, and the solute is the unknown…

Q: en 2.20 g of a certain molecular compound X are dissolved in 85.0 g of formamide (NH₂COH), the…

A:

Q: Suppose that you add 25.6 g of an unknown molecular compound to 0.250 kg of benzene, which has a Kf…

A:

Q: The normal freezing point of cyclohexane is 6.50 °C. A solution is prepared by dissolving 148.6 mg…

A: Given,  Normal freezing point of cyclohexane = T0f = 6.50 °C Mass of unknown nonelectrolyte (solute)…

Q: Calculate the freezing point (in ºC) of a solution made by dissolving 4.29 g of ethylene…

A: Given :-  Mass of ethylene glycol = 4.29 g  Mass of water = 28.3 g  Kf for solvent = 1.86 K/m…

Q: The freezing point of 50.40 g of a pure solvent is measured to be 47.46 ºC. When 2.10 g of an…

A:

Q: Chemistry When 248. mg of a certain molecular compound X are dissolved in 65.0 g of benzene (CH),…

A:

Q: A 3.40-g sample of a mixture of naphthalene (C₁₀H₈) and pyrene (C₁₆H₁₀) is dissolved in 35.0 g…

A: Molar Mass of napthalene (C10H8) = 128 g/mol Molar mass of pyrene (C16H10) = 202 g/mol Mass of…

Q: A certain substance X melts at a temperature of 7.4 °C. But if a 350. g sample of X is prepared with…

A: To calculate the molal freezing point depression constant Kƒ of substance X, we first need to…

Q: When 1.504 g of a solute is dissolved in 5.012 g of solvent (benzene), the solution freezes at -7.05…

A: Given: Mass of solute = 1.504 g Mass of solvent (Benzene) =5.012 g Freezing point of the solution…

Q: When  238.   mg  of a certain molecular compound X are dissolved in  90.0   g  of benzonitrile…

A:

Q: When 2.06 g of a certain molecular compound X are dissolved in 90. g of benzene (CH), the freezing…

A: mass of solute = 2.06 g mass of solvent = 90.0 g Solvent = benzene Freezing point = 3.5 oC

Q: The freezing point of a solution that contains 1.00 g of an unknown compound is dissolved in 10.0 g…

A: Tf = (Freezing point of pure solvent) - (Freezing point of solution)Tf=(5.48 oC) - (2.07 oC) = 3.41…

Q: Which of the following statements is TRUE regarding colligative properties in solution? Select one:…

A: given For a given concentration of solute in an aqueous solution, the magnitude of boiling point…

Q: The freezing point of 48.06 g of a pure solvent is measured to be 45.44 ºC. When 2.04 g of an…

A:

Q: When 397.g of benzamide C7H7NO are dissolved in 1400.g of a certain mystery liquid X, the freezing…

A: First of all we calculate the Kf of mystery liquid X using benzamide. For this purpose we use…

Q: freezing point of 57.08 g of a pure solvent is measured to be 50.83 ºC. When 2.86 g of an unknown…

A: Given -> Weight of solvent= 57.08 gm = 0.05708 kg (1kg=1000g) Freezing point of pure solvent =…

Q: When 627. mg of a certain molecular compound X are dissolved in 75. g of cyclohexane (C H 12 the…

A: The freezing point depression of solution is as follows,                                  ∆Tf = Kf .…

Q: An online study examined the lowering of freezing point when 0.222 g of an unknown molecular solute…

A: Mass of in known compound ,m = 0.222g Let the molar mass of compound be M g/mol. Then, number of…

Q: The vapor pressure of pure acetone, (CH3)2CO, at 250C is 229 torr. A.) Calculate the vapor pressure…

A: According to the question, The pressure exerted by a vapour with its condensed phases (solid or…

Q: When 258. g of alanine (C,H,NO,) are dissolved in 850. g of a certain mystery liquid X, the freezing…

A: Recall the following relation for depression of freezing point of a solution…

Q: When 6.31 g of a certain nonvolatile solute is dissolved in 505 g of water, the freezing point of…

A: Given data is as follows: The mass of nonvolatile solute = 6.31 g The mass of water = 505 g = 0.505…

Q: When 2.43 g of a certain molecular compound X are dissolved in 65. g of formamide (NH₂COH), the…

A: As we know,  Depression in freezing point,    Tf° - Tf = i * Kf * mWhere Tf° & Tf are freezing…

Q: The freezing point of 59.49 g of a pure solvent is measured to be 44.96 ºC. When 2.18 g of an…

A: Freezing point of the liquid is the temperature at which the vapor pressure of the solvent in the…

Q: The molal freezing point depression constant =Kf·7.96°C·kgmol−1 for a certain substance X. When…

A: Answer: We will calculate the depression in freezing point using following formula:…

Q: Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 ∘C,…

A: We have to calculate the vapour pressure of solution.

Q: 0.263 g of an organic compound (a non-electrolyte) is dissolved in 20.0 g of cyclohexane (C6H12) and…

A: given that mass of cyclohexane  is (wB) = 0.263 grams  freezing point of Pure cyclohexane (solvent)…

Q: When 16.3 g of an organic compound known to be 57.15% C, 4.8% H, and 38.06% O by mass is dissolved…

A: Given, the freezing point of pure solvent (water)(Tf0) = 00C  The freezing point of solution (Tf) =…

Q: A solution that contains 5.50 g of ferrocene [a non-electrolyte, molar mass = 186.0 g/mol] dissolved…

A: Given data, Mass of ferrocene = 5.50 g Molar mass = 186.0 g/mol Mass of solvent = 75.0 g = 0.075 Kg…

Q: Suppose that you add 22.6 g of an unknown molecular compound to 0.250 kg of benzene, which has a Kf…

A:

Q: compounds

A: The question is based on the concept of solutions. it applies the principle of raoult's law of…

Q: Camphor is a white solid that melts at 179.50°C. It has been used to determine the molecular weights…

A: given mass of unknown compound (solute) = 1.08 g Kf  = 39.7°C/m Mass of solvent = 73.6 g = 73.6×10-3…

Q: An ideal solution contains 0.1279 mol H2O and an unknown number of moles of urea (nonelectrolyte,…

A:

Q: What is the composition of a methanol (CH, OH) - propanol (CH,CH,CH, OH) solution that has a vapor…

A: Let mole fraction of methanol in liquid phase = Xm  By Raoult's law :  P = Pm° Xm + Pp° ( 1-Xm)…

Q: The freezing point of 57.08 g of a pure solvent is measured to be 50.83 ºC. When 2.86 g of an…

A:

Q: A 1.065 sample of an unknown substance is dissolved in 30g of benzene (Kf = 5.12 and Tf = 5.5ºC);…

A:

Q: When an unknown nonelectrolyte compound is dissolved in benzene (solvent), the freezing point of the…

A: Given that, Freezing point of solution Tf = 3.77 °C Freezing point of pure benzene Tf°= 5.44 °C…

Q: The normal freezing point of a certain liquid X is 4.60°C, but when 40.g of iron(III) nitrate…

A: We know that, depression in freezing point in terms of Van’t Hof factor is given by,…

Q: Pure napthalene freezes at 80.6oC and has a freezing point depression constant of 6.9oC/m. The…

A: Answer: The molar mass of the unknown compound is 72.63 g/mol.

Q: A solution consisting of 0.240 mol of methylbenzene, C6H5CH3, in 252 g of nitrobenzene, C6H5NO2,…

A: First, calculate the molality of the solution: Molality = Moles of methylbenzene / Mass of…

Q: A solution is made by dissolving 0.663 mol0.663 mol of nonelectrolyte solute in 849 g849 g of…

A:

Q: When 50.7 g of a certain molecular compound x are dissolved in 100 g of formamide (NH, COH), the…

A: Depression of freezing point is a colligative property. Colligative property depends on the number…

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.