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Freezing Point Depression Solutions Library

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Freezing Point Depression

Q. When 0.81 g of an unknown non-electrolyte is dissolved in 50.0 g of benzene, the freezing point decreased by 0.41 degrees C.If the Kfp of the solve...

Solved • Dec 16, 2019

Freezing Point Depression

Q. 0.528 grams of an unknown non-electrolytic solute were dissolved in 50.0 g of water (Kfp = 1.86 K/m). If the freezing point of the solution was -0....

Solved • Dec 11, 2019

Freezing Point Depression

Q. Which of the following solutions will have the lowest freezing point? Input the appropriate letter.A. 35.0 g of C3H8O in 250.0 g of ethanol (C2H5OH...

Solved • Dec 11, 2019

Freezing Point Depression

Q. Radiator coolant is often a 50/50 % by volume mixture of ethylene glycol, HOCH2CH2OH (62.1 g/mol), and water. At 20°C, the density of ethylene glyc...

Solved • Nov 1, 2019

Freezing Point Depression

Q. A mysterious white powder could be powdered sugar (C12H22O11), cocaine (C17H21NO4), codeine (C18H21NO3), norfenefrine (C8H11NO2), or fructose (C6H1...

Solved • Dec 3, 2018

Freezing Point Depression

Q. A small cube of lithium (density = 0.535 g/cm3) measuring 1.0 mm on each edge is added to 0.510 L of water. The following reaction occurs: 2 Li(s) ...

Solved • Dec 3, 2018

Freezing Point Depression

Q. Calculate the freezing point of a aqueous solution of K2SO4,Calculate the freezing point of a 0.100 m aqueous solution of K2SO4, ignoring interioni...

Solved • Dec 3, 2018

Freezing Point Depression

Q. Calculate the freezing point of a aqueous solution of K2SO4,Calculate the freezing point of a 0.100 m aqueous solution of K2SO4, taking interionic ...

Solved • Dec 3, 2018

Freezing Point Depression

Q. What is the freezing point of an aqueous solution that boils at 104.6 °C?

Solved • Dec 3, 2018

Freezing Point Depression

Q. When 13.62 g (about one tablespoon) of table sugar (sucrose, C12H22O11) is dissolved in 241.5 mL of water (density 0.997 g/mL), the final volume is...

Solved • Dec 3, 2018

Freezing Point Depression

Q. When 13.62 g (about one tablespoon) of table sugar (sucrose, C12H22O11) is dissolved in 241.5 mL of water (density 0.997 g/mL), the final volume is...

Solved • Dec 3, 2018

Freezing Point Depression

Q. Use the van't Hoff factors in the table below to calculate each colligative property:Van't Hoff Factors at 0.05 m Concentration in Aqueous Solution...

Solved • Dec 3, 2018

Freezing Point Depression

Q. Using the van't Hoff factors in the table below, calculate the mass of solute required to make each aqueous solution.Van't Hoff factors at 0.05 m c...

Solved • Dec 3, 2018

Freezing Point Depression

Q. What mass of glucose (C6H12O6) should be dissolved in 10.0 kg of water to obtain a solution with a freezing point of -4.2 oC?

Solved • Dec 3, 2018

Freezing Point Depression

Q. If each substance listed here costs the same amount per kilogram, which would be most cost-effective as a way to lower the freezing point of water?...

Solved • Dec 3, 2018

Freezing Point Depression

Q. Sulfuric acid in water dissociates completely into H+ and HSO4- ions. The HSO4- ion dissociates to a limited extent into H+ and SO42-. The freezing...

Solved • Dec 3, 2018

Freezing Point Depression

Q. A 50.0-mL solution is initially 1.54% MgCl2 by mass and has a density of 1.05 g/mL.What is the freezing point of the solution after you add an addi...

Solved • Dec 3, 2018

Freezing Point Depression

Q. Calculate the freezing point and boiling point of each aqueous solution, assuming complete dissociation of the solute.Calculate the freezing point ...

Solved • Dec 3, 2018

Freezing Point Depression

Q. Calculate the freezing point and boiling point of each aqueous solution, assuming complete dissociation of the solute.a. 0.100 m K2Sb. 21.5 g of Cu...

Solved • Dec 3, 2018

Freezing Point Depression

Q. Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute.Calculate the freezing point of a sol...

Solved • Dec 3, 2018

Freezing Point Depression

Q. What mass of salt (NaCl) should you add to 1.52 L of water in an ice cream maker to make a solution that freezes at -12.4 oC ? Assume complete diss...

Solved • Dec 3, 2018

Freezing Point Depression

Q. A glucose solution contains 71.8 g of glucose (C6H12O6) in 471 g of water.Determine the freezing point of the solution.

Solved • Dec 3, 2018

Freezing Point Depression

Q. Calculate the freezing point and boiling point of a solution containing 8.10 g of ethylene glycol (C2H6O2) in 92.8 mL of ethanol. Ethanol has a den...

Solved • Dec 3, 2018

Freezing Point Depression

Q. In ice-cream making, the ingredients are kept below 0.0°C in an ice-salt bath.(a) Assuming that NaCl dissolves completely and forms an ideal soluti...

Solved • Oct 30, 2018

Freezing Point Depression

Q. A biochemical engineer isolates a bacterial gene fragment and dissolves a 10.0-mg sample in enough water to make 30.0 mL of solution. The osmotic p...

Solved • Oct 30, 2018

Freezing Point Depression

Q. An aqueous solution is 10.% glucose by mass (d = 1.039 g/mL at 20°C). Calculate its freezing point, boiling point at 1 atm, and osmotic pressure.

Solved • Oct 30, 2018

Freezing Point Depression

Q. What is the minimum mass of glycerol (C3H8O3) that must be dissolved in 11.0 mg of water to prevent the solution from freezing at −15°C? (Assume id...

Solved • Oct 30, 2018

Freezing Point Depression

Q. The freezing point of benzene is 5.5°C. What is the freezing point of a solution of 5.00 g of naphthalene (C10H8) in 444 g of benzene (Kf of benzen...

Solved • Oct 30, 2018

Freezing Point Depression

Q. What is the freezing point of 0.251 m urea in water?

Solved • Oct 30, 2018

Freezing Point Depression

Q. What is the freezing point of a solution of dibromobenzene, C6H4Br2, in 0.250 kg of benzene, if the solution boils at 83.5 °C?

Solved • Oct 29, 2018

Freezing Point Depression

Q. How could you prepare a 3.08 m aqueous solution of glycerin, C3H8O3? What is the freezing point of this solution?

Solved • Oct 29, 2018

Freezing Point Depression

Q. What is the freezing point of a solution of 9.04 g of I2 in 75.5 g of benzene?(a) Outline the steps necessary to answer the following question.(b) ...

Solved • Oct 29, 2018

Freezing Point Depression

Q. What is the freezing temperature of a solution of 115.0 g of sucrose, C 12H22O11, in 350.0 g of water, which freezes at 0.0 °C when pure?(a) Outlin...

Solved • Oct 29, 2018

Freezing Point Depression

Q. Reserpine is a natural product isolated from the roots of the shrub Rauwolfia serpentina. It was first synthesized in 1956 by Nobel Prize winner R....

Solved • Oct 29, 2018

Freezing Point Depression

Q. What volume of ethylene glycol (C2H6O2), a nonelectrolyte, must be added to 15.0 L water to produce an antifreeze solution with a freezing point of...

Solved • Oct 29, 2018

Freezing Point Depression

Q. The freezing point of t-butanol is 25.50°C and Kf is 9.1°C • kg/mol. Usually t-butanol absorbs water on exposure to air. If the freezing point of a...

Solved • Oct 29, 2018

Freezing Point Depression

Q. What mass of glycerin (C3H8O3), a nonelectrolyte, must be dissolved in 200.0 g water to give a solution with a freezing point of -1.50°C?

Solved • Oct 29, 2018

Freezing Point Depression

Q. A solid consists of a mixture of NaNO 3 and Mg(NO3)2. When 6.50 g of the solid is dissolved in 50.0 g of water, the freezing point of the solution ...

Solved • Oct 29, 2018

Freezing Point Depression

Q. In the winter of 1994, record low temperatures were registered throughout the United States. For example, in Champaign, Illinois, a record low of 2...

Solved • Oct 29, 2018

Freezing Point Depression

Q. The freezing-point depression of a 0.091-m solution of CsCl is 0.320˚C. The freezing-point depression of a 0.091-m solution of CaCl2 is 0.440˚C. In...

Solved • Oct 29, 2018

Freezing Point Depression

Q. Calculate the freezing point and the boiling point of a 0.050 m MgCl  2 solution using the observed van’t Hoff factors in Table 10‑6.

Solved • Oct 29, 2018

Freezing Point Depression

Q. At -12.0°C (a common temperature for household freezers), what is the maximum mass of fructose (C6H12O6) you can add to 1.00 kg of pure water and s...

Solved • Oct 2, 2018

Freezing Point Depression

Q. lf a 0.770 m aqueous solution freezes at -3.30°C, what is the van't Hoff factor, i, of the solute? Kf values can be found here. 

Solved • Oct 2, 2018

Freezing Point Depression

Q. The following experimental data was collected during a freezing point depression study. Use this data to determine Kf for BHT (butylated hydroxytol...

Solved • Oct 2, 2018

Freezing Point Depression

Q. Choose the aqueous solution below with the  highest freezing point. These are all solutions of nonvolatile solutes and you should assume ideal van'...

Solved • Oct 1, 2018

Freezing Point Depression

Q. Calculate the freezing point (0°C) of a 0.05500 m aqueous solution of NaNO3. The molal freezing-point-depression constant of water is 186°C/m.(i) -...

Solved • Oct 1, 2018

Freezing Point Depression

Q. Part ECalculate the freezing point of a solution containing 0 160 m MgF2. Part FCalculate the boiling point of a solution above. 

Solved • Sep 28, 2018

Freezing Point Depression

Q. An aqueous solution containing 36.4 g of an unknown molecular (non-electrolyte) compound in 144.7 g of water was found to have a freezing point  of...

Solved • Sep 28, 2018

Freezing Point Depression

Q. Vitamin K is involved in normal blood clotting. When 1.10 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is l...

Solved • Sep 24, 2018

Freezing Point Depression

Q. A solution is made by dissolving 0.500 mol of nonelectrolyte solute in 773 g of benzene. Calculate the freezing point, Tf, and boiling point, Tb, o...

Solved • Sep 24, 2018

Freezing Point Depression

Q. Urea is a common fertilizer with the formula CO(NH2)2 that is sometimes used as a chemical deicer for icy road surfaces in the winter months. Addin...

Solved • Sep 18, 2018

Freezing Point Depression

Q. Assuming all the salts below are the same concentration, which salt would lower the freezing point of water the most? a) CaCl2b) NaCl c) KBr

Solved • Sep 12, 2018

Freezing Point Depression

Q. The normal freezing point of benzene (C6H6) is 5.48°C. The normal freezing point of a solution prepared by dissolving 2.00 g of a covalent compound...

Solved • Sep 12, 2018

Freezing Point Depression

Q. 45.8 g of NaCl is dissolved in 500, mL of a water (d = 1.00 g/mL) and is placed in the freezer at -1°C overnight. Which statement best describes wh...

Solved • Sep 12, 2018

Freezing Point Depression

Q. What is the normal freezing point of 0.100 m aqueous NaCl? Assume that NaCl dissociates completely. (Kf for water is 1.86°C/m) a) 0.372°C b) 0.0°C ...

Solved • Sep 11, 2018

Freezing Point Depression

Q. What volume of ethanol (density = 0.7893 g/cm3) should be added to 450 mL of water in order to have a solution that freezes at -15.0°C? [For water,...

Solved • Sep 11, 2018

Freezing Point Depression

Q. What mass of naphthalene must be dissolved in 2.50 x 102 g of benzene to give a solution with a freezing point 2.40°C below that of pure benzene?

Solved • Sep 5, 2018

Freezing Point Depression

Q. Be sure to answer all parts.How many liters of the antifreeze ethylene glycol [CH2(OH)CH2(OH)] would you add to a car radiator containing 7.00 L of...

Solved • Sep 5, 2018

Freezing Point Depression

Q. A solution is made by dissolving 0.622 mol of nonelectrolyte solute in 833 g of benzene. Calculate the freezing point, T1, and boiling point, Tb, o...

Solved • Aug 21, 2018

Freezing Point Depression

Q. Menthol is a crystalline substance with a peppermint taste and odor. When 1.06 g of menthol is dissolved in 25.0 g of cyclohexane. the freezing poi...

Solved • Aug 21, 2018

Freezing Point Depression

Q. You need to make a solution that freezes at -125.0 °C. How many grams of CaCl2 salt must you add to 68.0 g of ethanol (C2H6O) to make a solution th...

Solved • Aug 7, 2018

Freezing Point Depression

Q. A glucose solution contains 73.6 g of glucose (C6H12O6) in 464 g of water. Part ADetermine the freezing point of the solution. Part BDetermine the ...

Solved • Jul 31, 2018

Freezing Point Depression

Q. When very cold temperatures are coming, municipalities will salt the roads to decrease the freezing point of the water to prevent ice. What is the ...

Solved • Jul 16, 2018

Freezing Point Depression

Q. A student weighs out 1.556 g of t-butyl alcohol into a large test tube and measures the freezing point of the pure solvent to be 21.4°C, Next the s...

Solved • Jul 16, 2018

Freezing Point Depression

Q. Quinine is a natural product extracted from the bark of the cinchona tree, which is native to South America. Quinine is used as an antimalarial age...

Solved • Jul 9, 2018

Freezing Point Depression

Q. Assuming 100% dissociation, calculate the freezing point and boiling point of 1.30 m SnCl4 (aq). Constants may be found here.

Solved • Jul 9, 2018

Freezing Point Depression

Q. What is the change in freezing point temperature (ΔTf) of water if 0.25 m of Glucose is present in solution (Kf = 1.86°C/m)?a. 1.86°Cb. 1.00°Cc. 0....

Solved • Jun 26, 2018

Freezing Point Depression

Q. Which of the solution has the highest freezing point?

Solved • Jun 25, 2018

Freezing Point Depression

Q. How many grams of ethylene glycol, C 2H4(OH)2, must be added to 400.0 g of water to yield a solution that will freeze at -8.35 °C?a) 37 gb) 111 gc)...

Solved • Jun 25, 2018

Freezing Point Depression

Q. Part CCalculate the freezing point of a solution containing 3.5 % KCl by mass (in water). Express your answer using two significant figures. Part D...

Solved • Jun 6, 2018

Freezing Point Depression

Q. What is the freezing point of a 1.09 m aqueous solution of aluminum nitrate, AI(NO 3)3? The Kf of water is 1.86°C/m.

Solved • Jun 5, 2018

Freezing Point Depression

Q. Assuming 100% dissociation, calculate the freezing point and boiling point of 2.96 m Na2SO4(aq).

Solved • May 30, 2018

Freezing Point Depression

Q. The freezing point of water H2O is 0.00 degree C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in water is sucrose. How many grams ...

Solved • Apr 18, 2018

Freezing Point Depression

Q. The freezing point of ethanol CH3CH2OH is - 117.30 degree C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in ethanol is chlorophyll...

Solved • Apr 18, 2018

Freezing Point Depression

Q. Which of the following aqueous solutions has the lowest freezing point? The K f of water is 1.86 kg.°C/mol. Calculate the freezing point ONLY for t...

Solved • Mar 30, 2018

Freezing Point Depression

Q. What is the freezing point of an aqueous solution that boils at 106°C?       Kb = 0.51°C/m and Kf = 1.86°C/m. a. −4.55 °C b. −11.8 °C c. −21.9 ...

Solved • Jul 25, 2017

Freezing Point Depression

Q. A 5 g sample of CaI2 is completely dissolved in 22 g of water, what is the freezing point of the solution? Assume complete dissociation of the salt...

Solved • Jun 30, 2017

Freezing Point Depression

Q. What is Kf for water if the freezing point was lowered to -12°C once 30 g of Sodium Chloride was added to 150 g of water?

Solved • Jun 8, 2017

Freezing Point Depression

Q. Calculate the freezing temperature of a solution made by mixing 57.267 g of CaCl2 (MW = 110.98) in 350.00 g of water. k f = 1.86 C/mA. -2.74°CB. -1...

Solved • Apr 26, 2017

Freezing Point Depression

Q. What mass of ethanol, C2H5OH a nonelectrolyte, must be added to 10.0L of water to give a solution that freezes at -10.0°C? Assume the density of wa...

Solved • Mar 6, 2017

Freezing Point Depression

Q. The freezing point of benzene is 5.5°C. The freezing point depression constant for benzene is Kf = 4.3°C m-1. How much of Naphthalene  (C10H8) must...

Solved • Jan 24, 2017

Freezing Point Depression

Q. Glycerol (a non-electrolyte that can be used as antifreeze in a car radiator) has a density of 1.261 g/mL and a molecular weight of 92 g. If 100 mL...

Solved • Dec 15, 2016

Freezing Point Depression

Q. How many grams of antifreeze (C2H4(OH)2) would be required per 500 g of water to prevent the water from freezing at a temperature of −16°C ? The fr...

Solved • Dec 15, 2016

Freezing Point Depression

Q. How many moles of CO(NH 2)2 are present in 131 g of water, if the freezing point of the solution is −4.02 °C? kf (water) =1.86 C • kg/mol.1. 0.263 ...

Solved • Dec 14, 2016

Freezing Point Depression

Q. Ethylene glycol (C2H6O2) is a common automobile antifreeze, dissolving in water to make a nonelectrolytic solution. Consider now a 8.0 molal aqueo...

Solved • Dec 14, 2016

Freezing Point Depression

Q. Ethylene glycol (C2H6O2) is a common automobile antifreeze, dissolving in water to make a nonelectrolytic solution. Consider now a 9.0 molal aqueo...

Solved • Dec 14, 2016

Freezing Point Depression

Q. Consider a solution of 0.10 m CH3F dissolved in water.  The Kf of water is 1.86°C/m. Determine if the statements below is either true or false. Hy...

Solved • Sep 19, 2016

Freezing Point Depression

Q. What is the freezing point of a solution of 7.15 g MgCl 2 in 100 g of water? K f for water is 1.86°C/m. A) -0.140°C B) -1.40°C C) -2.80°C D) -4...

Solved • Sep 16, 2016

Freezing Point Depression

Q. What is the expected freezing point of a 0.50 m solution of Li 2SO4 in water? Kf for water is 1.86°C/m. A) -0.93°C B) -1.9°C C) -2.8°C D) -6.5°C

Solved • Sep 14, 2016

Freezing Point Depression

Q. Determine the freezing point of a solution that contains 78.8 g of naphthalene (C 10H8, molar mass = 128.16 g/mol) dissolved in 722 mL of benzene (...

Solved • Sep 14, 2016

Freezing Point Depression

Q. What volume of ethanol (density = 0.7893 g/cm3) should be added to 450 mL of water in order to have a solution that freezes at -15.0°C? [For water,...

Solved • Aug 25, 2016

Freezing Point Depression

Q. 800 g of ethanol, C2H5OH, was added to 8.0 x 10 3 g of water. How much would this lower the freezing point? (A) 3.2 °C (B) 4.1 °C (C) 8.2 °C (D...

Solved • May 9, 2016

Freezing Point Depression

Q. The approximate surface temperature of the Arctic Ocean is -1.8°C, which is the freezing point of salt water. Assuming NaCl is the predominant salt...

Solved • Apr 19, 2016

Freezing Point Depression

Q. What is the normal freezing and boiling point of a solution composed of 15.4 g of urea in 66.7 mL water?

Solved • Apr 18, 2016

Freezing Point Depression

Q. Determine the freezing point depression of a solution that contains 30.7 g glycerin (C3H8O3, molar mass = 92.09 g/mol) in 376 mL of water.  Some po...

Solved • Apr 11, 2016

Freezing Point Depression

Q. Determine the freezing point (in °C) of a solution of 11.712 grams of K 2SO4 dissolved in 500 grams of H2O. The Kb and Kf of water are 0.51 °C/m an...

Solved • Mar 16, 2016

Freezing Point Depression

Q. Calculate the freezing point of a solution containing 25 grams of KCl and 2750 grams of water. The Kb and Kf of water are 0.51 °C/m and 1.86 °C/m r...

Solved • Mar 16, 2016

Freezing Point Depression

Q. Nicotine, extracted from tobacco leaves, is a liquid completely miscible with water at temperatures below  60°C. What is the molality of nicotine (...

Solved • Mar 10, 2016

Freezing Point Depression

Q. Gunnison Bay, the north arm of Great Salt Lake in Utah has a roughly constant salinity of about 28%. In other words, 100 g of water from Gunnison B...

Solved • Feb 19, 2016