Urea, (NH 2 ) 2 CO, has been used to melt ice from sidewalks since the use of salt is harmful to plants. If the saturated aqueous solution contains 44 % urea by mass. a. what is the freezing point? b. will urea melt ice at –30 o C?

Q: The freezing point of pure water is 0.0°C. How many grams of ethylene glycol (CH,O2) must be mixed…

A: The expression for determining the mass of solute(ethylene glycol) required is shown below, ∆Tf =…

Q: 5. What is the boiling point of a 1.42molal MgS solution? (Ko of water = 0.512°C/molality) 6. What…

A: Formula used for elevation in boiling point: Formula used for lowering in freezing point: Where, i…

Q: 9.) Quinine was the first drug widely used to treat malaria, and it remains the treatment of choice…

A: We know that depression in freezing point is given by., ΔTf = i Kf m where, ΔTf is the freezing…

Q: What is the freezing point of a solution that is prepared by dissolving 23.5 g of MgCl2 (i = 3) into…

A: Given : mass of MgCl2 = 23.5 g  i for MgCl2 = 3  Mass of water = 125 g  Kf for pure water = 1.86°C/m…

Q: When 3.72 g dichloroethane is dissolved in 25 g of carbon tetrachloride, the boiling point raised…

A: The elevation of boiling point is a colligative property. It states that the liquid boils at that…

Q: Calculate the freezing point of a solution of 1.95 g of naphthalene (C10H8) in 15.50 g of benzene.…

A: This is a depression of freezing point or lowering of freezing point problem. This lowering of the…

Q: The freezing point of benzene is 5.5 ° C. What is the freezing point of a solution of 5.00 g of…

A: Molar mass of naphthalene is is 128.17 g/mol Number of moles of naphthalene can be calculated as:

Q: A solution is composed of 0.431 mole of glycerin (C3H5(OH)3), which is a nonvolatile solute, in 50.0…

A:

Q: Pheromones are compounds secreted by the females of many insect species to attract males. One of…

A: The molecular mass can be  calculated by using Colligative property depression in freezing point

Q: 5. The boiling point of benzene is 80.1°C and K for benzene 5.12°C/m. When 0.715 g of an unknown…

A:

Q: freezing point of a solution prepared by adding 150 g trichothecin (C19H14O5) to 0.867 kg of…

A: Freezing point of a liquid is defined as the temperature at which it gets converted to solid.…

Q: Determine the freezing point.

A: According to the convention, 1 g is equal to 10-3 kg/g. The mass of solvent (W) is calculated as…

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: Ethylene glycol (C:H.O2) is used as an additive to the water in your automobile to lower its…

A:

Q: The freezing point of benzene is 5.5°C. What is the freezing point of a solution of 5.00 g of…

A: FREEZING POINT: In chemistry, the specific temperature range at which a liquid compound is…

Q: 800 g of ethanol, C2H5OH, was added to 8.0 x 103 g of water.  By how many degrees would this lower…

A:

Q: You have an aqueous solution of NaCl that has a freezing point of -5.15°C. What mass (in grams) of…

A:

Q: What is the freezing point of an antifreeze solution created by adding 651g of ethylene glycol,…

A: Given details,

Q: When 87.0g of glycine C2H5NO2 are dissolved in 850.g of a certain mystery liquid X, the freezing…

A:

Q: When 84.8 g of alanine C3H7NO2 are dissolved in 1200. g of a certain mystery liquid X, the freezing…

A: Answer: Freezing point depression of a solution containing non-volatile solute is:…

Q: 1. Which will experience a greater freezing point depression, a 0.1 m solution of benzene in carbon…

A: We know that, depression in freezing point of a solvent is given by,…

Q: Pheromones

A: We will calculate molecular formula and weight

Q: 13. A solution made by dissolving 10.25 g naphthalene (C₁oHs, non- electrolyte, molar mass= 128.0…

A: Freezing point of solution can be calculated by using colligative property of depression in freezing…

Q: What is the boiling point increase of an aqueous 1m NaCl solution? (Kb = 0.52 ◦C/m)? A. 1.56 ◦C B.…

A: Given: Kb value is 0.52 ◦C/m. The molality of NaCl solution is 1 m.

Q: When 48.7g of benzamide C7H7NO are dissolved in 1300.g of a certain mystery liquid X, the freezing…

A: Benzamide dissolve in liquid X mass  of solute = 48.7 g mass of solvent = 1300 g ? Tf = 2.3 oC…

Q: 1. . NaCl is dissolved in water. Which of the following statements is incorrect? (a) Boiling point…

A: 1. (d) The solution will boil at 100 °C as NaOH is a volatile solute. 2. b) 1M 3. a) Osmosis.

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

A:

Q: What is the freezing point of a solution of 5.00 g of glycerin, C3H5(OH)3, in 47.8 g of water? Kf…

A: We have given that  What is the freezing point of a solution of 5.00g of glycerin C3H5(OH)3 in 47.8g…

Q: A compound containing only boron, nitrogen, and hydrogen was found to be 40.3% B, 52.2% N, and 7.5%…

A: NOTE : the constant given 5.12 °C m¯1 is Kf of benzene and not Kb Since the depression in freezing…

Q: A 750 mL solution (d = 1.05 g/mL) is made by dissolving 83.0 g of NaOH in water. %3D a. What is the…

A: We have to predict the  A. Molarity  B. % mass  C. Mole fraction

Q: What is the freezing point of a solution containing 0.794 moles of a nonvolatile, non-ionic compound…

A:

Q: How many grams of ethylene glycol (C2H6O2 = 62.07 g/mol) must be dissolved in 1000.0 grams of water…

A: Concept:  Upon adding some electrolyte there occurs the depression in freezing point as the surface…

Q: Ethylene glycol (C₂H₆O₂) is used as an additive to the water in your automobile to lower its…

A:

Q: From your predicted value of the van't Hoff factor, calculate the boiling point of a 1.62  m aqueous…

A: When a solute is dissolved in water, the boiling point of water is incresed known as elevation in…

Q: What volume of ethylene glycol (C2H5 O2), a nonelectolyte, must be added to 18.0L water to produce…

A: Given that:        Volume of solvent (H2O) = 18.0 L         density of ethylene Glycol = 1.11g/cm3…

Q: Which solution has the lowest boiling point? O 1.00 moles of NaCl in 1.0 L of water O 1.00 moles of…

A:

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 volume of ethylene glycol (), a nonelectrolyte, must be added to 17.0 L water to produce an…

A: Let's apply the formula for Depression of freezing point of a solution- ΔT = Kf . m . i Where, ΔT =…

Q: A solid consists of a mixture of NaNOz and Mg(NO3)2. When 6.50 g of the solid is dissolved in 50.0 g…

A: Decrease in the freezing point of solution by addition of a nonvolatile solute is known as…

Q: When 116.g of glycine C2H5NO2 are dissolved in 1050.g of a certain mystery liquid X, the freezing…

A: Answer:- this question is answered by using the simple concept of depression in freezing point .…

Q: composition by mass of the solid

A: Record the given info Mass of Solid = 6.50 g Mass of Water = 50.0 g Freezing point of the solution =…

Q: 7. The solution has a density of 1.19 g/mL. What is the a. molarity of hydrochloric acid (with water…

A:

Q: Concentrated nitric acid solution HNO3(aq) has a density of 1.42 g/mL and a concentration of 16 M.…

A: Given: Concentration of HNO3 = 16 M And density of solution = 1.42 g/mL. Assuming 1 L i.e. 1000 mL…

Q: What is the freezing point of a solution prepared by adding 150. g trichothecin (C19H24O5) to 0.867…

A: The given data contains, mass of trichothecin = 150 g. mass of solvent = 0.867 kg.

Q: 2) An antifreeze solution is made up of 18g ethylene glycol (MM = 62.07 g/mol), a nonelectrolyte,…

A: The relationship between depression in freezing point and molality of solution is given by  ∆Tf = Kf…

Q: If 4.27 grams of sucrose, C12H22O11, are dissolved in 15.2 grams of water, what will be the boiling…

A: Calculate the molality of the solution. Moles of sucrose=4.27/342.3 g/mol=0.012 mol Molality=0.012…

Q: What is the strongest type of intermolecular force between solute and solvent in each solution?(a)…

A: Forces which are found between atoms, molecules (or) ions are intermolecular forces. There are five…

Q: Urea, (NH2 )2 CO, is dissolved in 250.0 g of water. The solution freezes at – - 0.081°C. How many…

A:

Q: Ethylene glycol (C₂H₆O₂) is used as an additive to the water in your automobile to lower its…

A:

Q: 4. What is the freezing point of a solution that contains 610g of benzoic acid, HC7H502, in125g of…

A: Given :  4.  Mass of benzoic acid = 610 gm  Mass of camphor = 125 gm = 0.125 kg Kf of camphor =…

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.