Dave performs an experiment to determine the van 't Hoff factor for an aqueous solution of CaCl2. He adds 0.736 g of CaCl2 to the sample test tube along with 20.0 mL of distilled water. He then freezes the solution and determines the freezing point depression from the difference in melting point of the pure solvent and the solution. He obtains 1.8 °C as the freezing point depression, ∆T, for his first trial and 1.7 °C in his second trial. What is the calculated van 't Hoff factor using Dave's experimental data? Molar mass of CaCl2 is 110.98 g/mol Density of H2O is 0.9982 g/mL Kf of water is 1.86 °C/m

Q: A 1 M aqueous solution was made using 9.52 g of magnesium chloride. The density of the solution was…

A: Given : Concentration of Magnesium chloride i.e MgCl2 = 1 M Mass of MgCl2 = 9.52 g Density of…

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: A researcher prepares a new compound and uses freezing point depression measurements to determine…

A: Given Mass of compound = 1.538 g mass of cyclohexane = 75 g  freezing point of the solution = 2.16°C…

Q: 40.0 grams of an unknown compound are added to 2.5 kg of water. The compound has a van't Hoff factor…

A: ∆Tf = i × Kf × m  ∆Tf = depression in freezing point  i= Vant Hoff factor  Kf = molal freezing point…

Q: The experimental data in the table was collected during a freezing point depression study where BHT…

A: When a non-volatile solute is dissolved is dissolved in a volatile solvent, the freezing point of…

Q: 0.0471 kg of biphenyl (C12H10) is dissolve in benzene (CoH6) to create a solution with a total…

A: Answer: This question is based on Raoult's law according to which, after adding the non-volatile…

Q: A solution is made by dissolving 0.539 mol of nonelectrolyte solute in 843 g of benzene. Calculate…

A: When a non-electrolyte solute is added to a pure solvent, then the freezing point of the solution…

Q: Consider a solution containing 5 moles of acetone and 5 moles chloroform. The vapor pressures of…

A: The given solution contains acetone and chloroform. Number of moles of acetone = 5 molNumber of…

Q: The freezing point of a liquid will change when a solute is added. Explain how the addition of salt…

A: The freezing point of the solution is the temperature at which the liquid state of a substance…

Q: Plants that thrive in saltwater must have internal solutions (inside the plant cell) that are…

A: Temperature = T = 25 °C = 298 K  Density at 25 °C = d = 1.025 g/L   Freezing point depression = ∆Tf…

Q: We can calculate the amount of freezing point depression that will occur using the following…

A: We have to calculate the ∆Tf that is depression in freezing point, we have 5g of sucrose in 0.25 Kg…

Q: 6.50

A: Dear student I have given answer to your question in the image format.

Q: Can you form a homogenous solution between ionic compounds like LiCl and vegetable oil? Why or why…

A: When two or more pure sunstanc are combined together , the resulting mixture will be either…

Q: Suppose that you add 22.2 g of an unknown molecular compound to 0.250 kg of benzene, which has a K…

A: Mass of compound = 22.2 g Let the molar mass is M g/mol Moles = (22.2/M) mol Freezing point constant…

Q: When 136. g of urea (CH₂N₂O) are dissolved in 750. g of a certain mystery liquid X, the freezing…

A:

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 researcher prepares a new compound and uses freezing point depression measurements to determine…

A: Given,  Mass of the compound (w) =  1.966 g Mass of cyclohexane (W) = 75.00 g Freezing point of…

Q: * Module 3: In his experiment, Mashiho wanted to determine the molar mass of his unknown sample.…

A:

Q: The molar mass of unknown molecular compound is determined using freezing point depression. The…

A: Since benzene is non, electrolyte, i = 1 ∆Tf = Tbenzene -T solution          = 5.53 -(-10.21) =…

Q: In addition to filling in the blanks below, show all of your work for this problem on paper for…

A: Answer is explained below.

Q: . An unknown substance has a van’t Hoff factor of 3.4. Into exactly 1 kg of water, you dissolve 16.2…

A:

Q: A 0.520 g sample of an unknown nonelectrolyte compound is dissolved in 4.09 g of lauric acid (Kf =…

A: Please find the attached file for explanation.

Q: 43.82 g of potassium chloride (KCI, 74.551 g/mol) is dissolved in 142.2 g of water. The van't Hoff…

A: Given that ,  Mass of KCl (w) = 43.82 g  Molar mass of KCl (m.wt) = 74.551 g/mol Mass of water (W) =…

Q: What are the boiling point and freezing point of a 2.97 m solution of naphthalene in benzene?

A: we have to calculate the boiling point freezing point of 2.97 m solution of naphthalene in benzene…

Q: When 18.6 g of a certain molecular compound X are dissolved in 30.0 g of benzene (C6H), the freezing…

A:

Q: Given the following mixture of two compounds 65.00 mL of X (MW =82.00 g/mol)(density 0.808 g/mL) and…

A:

Q: My imaginary molecular compound has an empirical formula of C,H40. If you dissolve 2.64 grams of…

A: Using formula of depression in freezing point we can find molar mass and then we can determime…

Q: A 12.7 g substance was dissolved in 2.00 g of solvent. The molar mass of the unknown substance is…

A:

Q: With this in mind, lets calculate the amount of depression that will occur when 5 g of sodium…

A:

Q: Two volatile liquids A and B form an ideal solution.  The vapor pressures for the pure liquids (at T…

A: Raoult’s law: partial vapor pressure of mixture is equal to multiplication of vapor pressure of pure…

Q: Temperature, °C 3.0 2.0 1.0 0.0 4.0 5.0 8.0 7.0 6.0 0 In an experiment, the freezing point curve of…

A: Freezing point depression : It is defined as the  lowering of the freezing point of a solvent upon…

Q: 1-A sample of pure t-butyl alcohol weighing 6.22 g was found to have a freezing point of 24.7 °C.…

A:

Q: When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was…

A: Answer:- This question is answered by using the simple concept of depression in freezing pint. Then…

Q: 4) The molality of naphthalene in a solution of naphthalene (C₁oHs, MW= 128.18 g/mol) and…

A: The colligative properties are those properties of solutions that depend on the number of solute…

Q: A student enters the lab and determines the freezing point of pure liquid to be 39.8 ºC. A…

A: Given: Freezing point of pure liquid = 39.8 oC Freezing point solution = 36.3 oC Molal depression…

Q: 1. A 0.194 g sample of a nonvolatile solute dissolves in 9.82 g of cyclohexane. The change in…

A:

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.