1.Assume that the measured freezing point of pure cyclohexane using your thermometer was 6.0 °C. A 0.50 molal solution of benzil (molar mass = 154.2 g/mol) lowers the freezing point of cyclohexane to -3.8 °C. What is the value of Kf for cyclohexane using the above data? 2. If 0.300 g of one of the unknown solids was dissolved in 25.0 mL cyclohexane (d = 0.780 g/mL), using the Kf from the previous problem, what is the molar mass of the unknown if the new freezing point is

Q: onsider the solubilities of a particular solute at two different temperatures.…

A: For a saturated solution,   the amount of solute dissolved is equal to the solubility . that is…

Q: The freezing point of ethanol, CH3CH,OH, is -117.300 °C at 1 atmosphere. KAethanol) = 1.99 °C/m In a…

A: Given: Mass of compound (solute) = 12.60 g Mass of ethanol (solvent) = 265.8 g Freezing point of…

Q: Using this equation, find the new freezing point for each of the following solutions.  For water, .…

A: a. 3.85 mol NaCl in 4.50 kg of water b. 2.00 g K3PO4 in 1.00 kg of water c. 150.0 g of sugar (molar…

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

A: Answer:

Q: When a 5.64 g sample of a non-electrolyte was dissolved in 40.0 g of water, the freezing point of…

A: Molality of the solution can be calculated as follows:

Q: Find the freezing point (oC) for the new solution when 0.0080 mole of solute is added to 3.0 g of a…

A: Recall the following relation to calculate the freezing point of the solution…

Q: Consider the solubilities of a particular solute at two different temperatures. Temperature (∘?)…

A: Given data: Mass of solute at 20˚ C = 48.3 per 100 g of water Mass of solute at 30˚ C = 87.6 per 100…

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

A:

Q: A solution made by dissolving 150.0 g of an unknown compound in 330.0 mL of benzene to make a…

A: The properties of solution that depend only on the concentration of the solute and is independent of…

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: 10.0 g of an organic substance is dissolved in 80.0 g of benzene. The freezing point of the solution…

A: Mass of benzene = 80.0 g = 0.080 Kg mass of organic solute = 10.0 g Freezing point of this solution=…

Q: What mass of ethylene glycol, when mixed with 225 g H2O, will reduce the equilibrium vapor pressure…

A: To solve this problem we have to calculate the mass of the solute (ethylene glycol). Raoult's Law of…

Q: What is the total equilibrium vapor pressure of a benzene toluene solution if the mole fraction of…

A:

Q: What is the boiling point and freezing point of a solution that contains 18.0g of NaCl in 100.0 mL…

A:

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: A solution was made by mixing 6.25 g of heptane (C7H63, molar mass = 100.21 g/mol) with 46.2 g of…

A:

Q: 1.) You find a sample of an unknown compound that is a non-electrolyte. You prepare a solution by…

A:

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: When you open a bottle of a carbonated beverage, bubbles of carbon dioxide gas escape from the…

A: Henry’s Law:Henry's Law explains the solubility of gas in a liquid solution. It states that the…

Q: A solution of a non-electrolyte is made by dissolving 12.15 moles of solute in 1.280 kg of water.…

A: We will first calculate molality of solution , then using it find freezing point of solution.

Q: what is the molar mass of the compound?

A: We know that  ∆Tf = iK × mass of solute(g)/molar mass of solute(G) ×(1/mass of solution in Kg)…

Q: Menthol is a crystalline substance with a peppermint taste and odor. When 1.52 g of menthol is…

A:

Q: The freezing point of lauric acid was lowered by 1.68°C when a 3.706 g sample of a nondissociating…

A: Solution- The freezing point depression (ΔTf) is given by the formula:  ΔTf = Kf × m × i where Kf is…

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

A:

Q: We mixed some ethylene glycol with 346 g water to reduce the equilibrium vapor pressure of water…

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

Q: таyers. layer is on top If molecular iodine (I2) is added to the test tube, predict which plve most…

A: Water layer is on top because water is less denser then carbon tetrachloride. Molecular iodine is…

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 freezing point of water is 0.00 °C at 1 atm. If 18.4 g of calcium chloride are dissolved in…

A: To solve this problem we will use the formula  ∆Tf = i Kf m  Where  ∆Tf = depression in freezing…

Q: 15.2 g of camphor dissolved in naphthalene lower the freezing temperature of naphthalene from 80.0…

A: Given: Mass of camphor=15.2 g Molar mass of camphor=152 g/mol Lowered freezing point of…

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 solubility limit of a solute at 20. °C and 1.0 atm is 13.8 g of solute per 1 L of water. What…

A: The explanation is given below-

Q: A solution made by dissolving 150.0 g of an unknown compound in 375.0 mL of benzene to make a…

A: Given that: Mass of unknown compound = 150.0 g Volume of benzene = 375.0 mL Freezing point…

Q: What is the molar concentration of the solution? concentration: ----m   How many moles of solute…

A:

Q: What is the freezing point (in K) of a solution made by dissolving 11.983g of CCl4 in 130.0 g of…

A: Given, Mass of CCl4 solute = 11.983 g Mass of benzene solvent = 130.0 g = 0.130 kg Freezing point of…

Q: Adding 1.64 g of naphthalene to 80 grams the cyclohexane lower the freezing point from 5.53 to…

A: We can find the answer by depression in freezing point formulaaand molality

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: Remember that the boiling point elevation constant for water is Kb = 0.512 C/kg, and the freezing…

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.