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

A:

Q: Calculate the freezing point of a solution made by dissolving 1.00 mole of NaCl in 1000. g of H2O.

A: We will use formula of ∆Tf. ∆Tf=Tf°-Tf

Q: A solution that contains 18.467 g sucrose (table sugar, C12H22O11) and 45.61 mL of water freezes at…

A:

Q: 4. Calculate the freezing point depression a 0.15 m aqueous solution of sodium chloride. Kf = 1.855…

A: Depression in the freezing point is the difference between the freezing point of the pure solvent…

Q: 14. Certain compounds are known to “dimerize” in solution – this means that the intermolecular…

A: The depression in freezing point is given by  ΔTf = i * Kf * molality where ΔTf = depression in…

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

A: Given, Freezing point of solvent (T°) = -12.6°C Freezing point of solution (T) = -18.3°C Mass 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: 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: The freezing point of pure benzene is 5.49 °C. The freezing point of a solution containing 6.582 g…

A:

Q: Determine the freezing point of a solution consisting of 0.350 m KCl in water. The freezing point…

A: Cryoscopic constant of water is 1.86oC/molal Van’t Hoff factor (i) is 2 since each KCl give on one…

Q: Determine the freezing point of a solution consisting of 0.350 m KCl in water. The freezing point…

A: Given Data: The molarity of the solution is 0.350 m. The value of Kf, of water is 1.86 °C/m. The…

Q: dissolving 4.555 g of ZnSO 4 in 150.0 g of water? The freezing point constant of water is 1.86…

A: We have to calculate the decrease in freezing point of the guven solution

Q: A substance suggested as a possible solvent for use in molecular mass determinations by freezing…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: 3. A 0.2436-g sample of an unknown substance was dissolved in 20.0 mL of cyclohexane. The density of…

A:

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

A:

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: When 6.66 g of a certain molecular compound X are dissolved in 60. g of benzonitrile (CH₂CN), the…

A:

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: Calculate the freezing point of a solution made by adding 16.43 g of a nonelectrolyte (125.5 g/mol)…

A: Molality is the number of solvent moles per kilogram.Molality is also known as molal concentration.…

Q: 6.50

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

Q: A certain liquid (A) has a normal boiling point of 127.80°C and a boiling point elevation constant…

A:

Q: Calculate the vapor pressure (in torr) of a solution prepared by dissolving 0.500 mol of a…

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: the freezing point of the solution be?  Calculation sheet attached.

A: Given: The melting (freezing point) point of carbon disulfide = -111.5 deg C. The freezing 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: The molal freezing point depression constant K,=4.05 °C - kg • mol for a certain substance X. When…

A:

Q: When 168 mg of a certain molecular compound X are dissolved in 25.0 g of cyclohexane, the freezing…

A: Solution -

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

A:

Q: 1. A student determines the molar mass of methanol, CH3OH by the same method used in this…

A: Answer: This question is based on the colligative property of the solution. Colligative property of…

Q: A 3.34 g sample of an unknown organic molecule is dissolved in 15.0 g of water solvent. The…

A: When solute is added to a pure solvent the freezing point decreases for the solution and the boiling…

Q: A student prepares a solution by dissolving 2.09 g of para-dichlorobenzene (C6H4Cl2,= 147.0 g/mol)…

A:

Q: A 1.09 g sample of substance X is dissolved in 26.8 g of benzene. The freezing point of the solution…

A: The ratio of moles of solute to the mass of the solvent in kg is known as molality.

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

A: Given data contains, Freezing point of temperature is -7.4°C. Mass of sample X is 350.0 g Mass of…

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

A:

Q: Calculate the freezing point and boiling point for 0.43 molmol ethylene glycol and 0.17 mol KBrmol…

A: Boiling point =374.8K (Upto one decimal place) Freezing point= -6.5K (upto one decimal place)

Q: 4. To make a solution, 40 g of a nonelectrolyte is dissolved into 300 g of water. The freezing point…

A: Since you have posted multiple question, we will solve only first question for you. To get remaining…

Q: Determine the freezing point of a solution consisting of 0.350 m KCl in water. The freezing point…

A:

Q: 16. Calculate the vapor pressure of a solution prepared by dissolving 0.750 mol of a non-volatile…

A: No. of moles of hexane,n = = = 3.77 molNo . of moles of non-volatile solute , n' = 0.750 molTotal no…

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: Why is a large freezing point depression constant (Kf) advantageous when determining freezing point…

A: As we know, ∆Tf=Kf×m when determining freezing point depression, a large freezing point depression…

Q: What would be the theoretical freezing point of a solution made by dissolving 15.56 g of CrSO 4 in…

A:

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℃.…

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.