The freezing point of pure benzene (CH) is 5.50°C. The freezing point of a solution containing 5.00 g of an unknown non-dissociating solute in 444 g of benzene is 5.07°C. K, of benzene = 4.90°C/m. Show complete calculations for each question below. 1. What is the freezing point depression for this solution? ATE5.50% k4.90°C/m 2. What is the molality of the solution of unknown solute in benzene? 3. What is the molar mass of the unknown solute?

Q: Calculate the freezing point of a solution of 40.0 g methyl salicylate, C 7H 6O 2, dissolved in 800.…

A:

Q: A certain liquid X has a normal freezing point of -6.50 °C and a freezing point depression constant…

A: Since the mass of solute KBr = 15.2 g hence moles of KBr = mass / molar mass = 15.2 / 119 = 0.12773…

Q: The normal freezing point of a certain liquid X is -0.40 °C, but when 5.42 g of ammonium sulfate…

A: Given: The normal freezing point of X = -0.40 oC When 5.42 g of ammonium sulfate [(NH4)2SO4] are…

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: 27. An ethylene glycol solution contains 28.3 g of ethylene glycol, C2H602 in 97.2 mL of water.…

A: This problem is based on Solutions chapter where it is of the subtopic Colligative Properties of…

Q: Determine the freezing point of a solution that contains 78.8 g of naphthalene (C10Hg, molar mass =…

A: Given:Mass of napthalene (C10H8) = 78.8 gMolar mass of (C10H8) = 128.16 g/molDensity of benzene =…

Q: 4. A compound contains 42.9% C, 2.4% H, 16.6% N, and 38.1% O by mass. The addition of 3.16 g of this…

A:

Q: A certain liquid X has a normal freezing point of -4.50 °C and a freezing point depression constant…

A:

Q: The freezing point of CCl4 is -22.92°C. Calculate the freezing point of the solution prepared by…

A: The molar mass of pyrazine is 80.09 g/mol. The number of moles of pyrazine is calculated below.

Q: A solution is prepared by dissolving 7.00 g of glycerin (C3H8O3) in 201 g of ethanol (C2H5OH). The…

A: Freezing point depression is given by

Q: Benzaldehyde (M= 106.1 g/mol), also known as oil of almonds, is used in the manufacture of dyes and…

A:

Q: The freezing point of a solution of 1.648 g of an unknown nonelectrolyte dissolved in 76.21 g of…

A: Data given: The freezing point of a solution of an unknown nonelectrolyte, Tf = 1.39 °C The freezing…

Q: 1. A 0.735 g of a covalent organic compound is dissolved in 15.00 g cyclohexane (freezing point =…

A: The depression in freezing point  is given by,                                       ΔTf = mKf…

Q: An aqueous solution has a normal boiling point of 103.0°C. What is the freezing point of this…

A:

Q: What mass of glycerin (C3H8O3), a nonelectrolyte, must be dissolved in 200.0 g water to give a…

A: As we know, ΔTf = Kf.m.iwhere:ΔTf = reduction of freezing from 0 degree celcius = 0 -(-3.60) = 3.60…

Q: A solution containing 10.0 g of an unknown nonelectrolyte solute and 90.0 g water has a freezing…

A: Mass of non-electrolyte solute = 10.0 g  Mass of solvent (Water)= 90.0 g Depression in freezing…

Q: A 3.03-gram sample of a compound is dissolved in 250. grams of benzene. The freezing point of this…

A: We can use the formula: ΔT = Kf x m where ΔT is the change in freezing point, Kf is the freezing…

Q: 17. NaF (MM = 41.99 g/mol) having a mass of 17.2 g was dissolved in 289 g of chloroform. What is the…

A:

Q: A solution made by dissolving 150.0 g of an unknown compound in 365.0 mL of benzene to make a…

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only.

Q: 10.Pure ethanol (C2H5OH) typically freezes at -114.6 °C, with a Kf value of -1.99 °C/m. If 50.00 g…

A: Pure ethanol freezes at -114.5 °c 50.00 g of Ca(NO3)2 is added in 700 g of ethanol. Freezing point…

Q: A certain liquid X has a normal freezing point of-3.00 °C and a freezing point depression constant…

A:

Q: If the freezing point of the solution was observed to be -8.6 °C, and the normal freezing point of…

A: Given: Freezing point of solution = -8.6 oC The freezing point of pure solvent i.e. cyclohexane=…

Q: Calculate the freezing point of a solution of 35.0 g methyl salicylate, C 7H 6O 2, dissolved in 800.…

A: Calculate the number of moles of methyl salicylate (C8H8O3): Calculate the molality of the…

Q: What is the molal concentration of a sugar solution that freezes at -0.93°C?

A: Formula is     △Tf  = Kf m   where   Depression in Freezing point  = freezing point of water -…

Q: Find the freezing points of the following solutions. (Kf for water is 1.86°C/m) a. 0.35 moles of…

A: We have to ask here to find the freezing point of the given solutions. The answer to this question…

Q: Determine the freezing point of a solution that contains 78.8 g of naphthalene (molar mass 128.16)…

A: Molality of solution can be calculated as follows:

Q: 1. What is the freezing point of a solution made by dissolving 5.0 g of naphthalene (C10H8) in 500.0…

A:

Q: What is the freezing point of a solution prepared by dissolving 5.908 g of ethanol, CH3CH2OH…

A: The freezing point can be calculated by the colligative propert i.e. Depression in freezing point.…

Q: Calculate the freezing point of a solution that contains 168.4 g of sucrose (table sugar) in 300. g…

A:

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

A: Question is asked about the freezing point  of the compound. Some compound are given , we have to…

Q: liquid and 90.0 g of water has a freezing point of -3.33°C. Given Kf = 1.86 °C/m for water, the…

A:

Q: Above solution: 0.140 g of an unknown solute is dissolved in 7.88 g of cyclohexane (C6H12). The…

A:

Q: 4. A compound contains 42.9% C, 2.4% H, 16.6% N, and 38.1% O by mass. The, addition of 3.16 g of…

A: Given:  Mass of compound = 3.16 gm  Volume of cyclohexane = 75 ml  Density of cyclohexane = 0.779…

Q: The freezing point of an aqueous solution containing 35 g of an nonelectrolyte in 150 mL water is…

A:

Q: 23. An ethylene glycol solution contains 28.3 g of ethylene glycol, C2H6O2 in 97.2 mL of water.…

A: Answer:When a non-volatile solute is added in a solvent, it causes a depression in freezing point…

Q: Determine the freezing point depression of a solution that contains 30.7 g glycerin (C 3H 8O 3,…

A: Depression at the Freezing Point: A solution's freezing point is lower than that of the pure…

Q: It takes 6.86 kg of ethylene glycol (antifreeze) to decrease the freezing point of 6.50 kg of water…

A: This question is based on the concept of freezing point depression. We will use the freeing point…

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.