Students are investigating a solvent for use in freezing point depression experiments. They measured the freezing point of the solvent as −12.6 ⁰C. The solution they made by dissolving 0.484 g of ethanol (46.07 g/mol) in 8.254 g of the solvent has a freezing point of -18.3 ⁰C.  Determine the freezing point depression constant, Kf, for the solvent.

Q: Calculate the molality of chloride ions in an aqueous solution of magnesium chloride in which the…

A: To solve this problem we will use the formula of molality

Q: The normal freezing point of a certain liquid X is 1.60 °C, but when 18.2 g of benzamide (C₂H,NO)…

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 normal freezing point of a certain liquid X is -4.4 °C, but when 12.06 g of urea freezes at -8.3…

A: The normal freezing point of a certain liquid X is  -4.4o CWhen 12.06 g of urea is dissolved in 350…

Q: A solution was made by adding 800 g of ethanol, C2H5OH, to 8,000 g of water. How much would this…

A: The formula for calculating Freezing point depression is, ∆Tf=Kf.m.i where, Kf is the cryoscopic…

Q: The normal freezing point of a certain liquid X is -0.70 °C, but when 19. g of sodium chloride…

A: Given ,Normal freezing point of certain liquid, X Mass of NaCI = 19. gMass of X = 850. gObjective…

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 solution was prepared by dissolving solute T in 115 g benzene. The freezing point of this solution…

A: Depression in freezing point is equal to that product of molal depression constant and molality of…

Q: A solution was prepared by dissolving solute T in 115 g benzene. The freezing point of this solution…

A: Depression in freezing point is given by the expression:ΔT = Kf x 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: but when 17.0 g The normal freezing point of a certain liquid x is 3.90 °C, benzamide (C,H,NO) are…

A: Given: The normal freezing point of liquid X = 3.90 oC When 17.0 g of benzamide are dissolved in…

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

A:

Q: The normal freezing point of a certain liquid X is 3.90°C, but when 12. g of potassium bromide (KBr)…

A: Upon addition of some external material the freezing point and boiling point of the compound changes…

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 was prepared by dissolving solute T in 105 g benzene. The freezing point of this solution…

A:

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

A:

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: Calculate the molality of chloride ions in an aqueous solution of magnesium chloride in which the…

A:

Q: 1.812 grams of an unknown compound is dissolved into 77.7 grams of benzene, an organic solvent with…

A:

Q: A certain liquid X has a normal freezing point of -4.00 °C and a freezing point depression constant…

A:

Q: The normal freezing point of a certain liquid X is 4.70°C, but when 83.g of benzamide (C7H7NO) is…

A: Colligative properties are the properties which depend on the number of atoms or molecules or ions…

Q: The normal freezing point of a certain liquid x is -6.20 °C, but when 36. g of iron(III) chloride…

A: We will calculate the molal freezing point depression constant Kf. Given: The normal freezing point…

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…

Q: A student prepares a solution by dissolving 1.88 g of para-dichlorobenzene (C6H4Cl2, = 147.0 g/mol)…

A: Given; The given mass of C6H4Cl2, (Wb) = 1.88 g. The molar mass of C6H4Cl2, (Mb) = 147.0 g/mol. The…

Q: The normal freezing point of a certain liquid X is 0.10 °C, but when 18. g of potassium bromide…

A:

Q: The normal freezing point of a certain liquid X is -9.10 °C, but when 8.7 g of potassium bromide…

A: The depression in freezing point is a colligative property. The depression in freezing point is…

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

A: Given data,  The freezing point of the solvent=-12.6℃. The freezing point of the solution=-18.3℃.…

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: Benzene is a common industrial solvent (molar mass: 78.11 g/mol). Its normal freezing point is 5.50…

A:

Q: The normal freezing point of a certain liquid X is 0.60°C, but when 0.14 kg of barium hydroxide…

A: Given : Mass of barium hydroxide, Ba(OH)2 i.e solute = 0.14 Kg = 140 g         (since 1 Kg = 1000 g)…

Q: A solution was prepared by dissolving solute T in 120 g benzene. The Tin this solution. Solute T is…

A: We know that,  ∆Tf = Tf ( pure benzene) - Tf(solution)          = (5.50 - 5.18) °C.         = 0.32°…

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.