How many grams of electrolyte KF (molar mass = 58.10 g/mole) must be added to 64.10 g of ethanol (Kf (ethanol) = 1.99 oC/m) to change its freezing point to -146.23 oC? The normal freezing point of ethanol is -117.30 oC.

Q: K,= 2.57 °C kg mol for a certain subs 20 colution freezes at 5.7 °C. Calculate the freezing point of…

A: At freezing point of liquid there exists equilibrium between solid particles and solvent phase.…

Q: Calcium chloride, CaCl2, has been used to melt ice from roadways. Given that a solution is 30.%…

A: Calcium chloride, CaCl2, has been used to melt ice from roadways. Given that a solution is 30.0 %…

Q: Lithium chloride (LiCl) has a lattice energy of -834.0 kJ/mol and a heat of hydration of –871.0…

A:

Q: What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 200.1 g of water in order…

A: Since we know that  ∆Tf = i• Kf •m  Where,  ∆Tf is the depression in freezing point  i is the van't…

Q: What mass of NaNO3 should be dissolved in 45 mL of water so that the resulting solution freezes to…

A:

Q: 1. The freezing point of an aqueous solution is -2.79°C. a. Determine the boiling point of this…

A: Given: The freezing point of the solution=-2.790C. Kf=1.860Cmol-1kg. Kb=0.5120Cmol-1kg.

Q: What molality of N a Clis required to lower the freezing point of water to -19.7 degrees C? Use…

A:

Q: What mass of fructose, C5H10O5 (molar mass is 150.2 g), in grams must be added to 115 g H2O to lower…

A: The question is based on the concept of solutions.   Molality is a method of expressing…

Q: What is the freezing point of a solution containing 478 g of ethylene glycol (antifreeze) in 3022 g…

A:

Q: 8. A solution containing 1.00 g of an unknown nonelectrolyte liquid and 9.00 g water has a freezing…

A: Tf° = -3.33°C ∆Tf = 0-(-3.33) = 3.33 °C Kf = 1.86°C/m  Mass of water = 9.0 gm  Mass of electrolyte =…

Q: An aqueous solution is prepared by dissolving 72.0 g glucose (180.18 g/mol) in enough water to make…

A: Number of moles of glucose (solute) is calculated as follows,

Q: The density of toluene, CHs, is 0.867 g/ml and the density of thiopene, CaH«S , is 1.065 g/mL. A…

A: Density of toluene = 0.867 g/ml Density of thiopene = 1.065 g/ml Volume of thiopene = 14.0 mL Volume…

Q: How many grams of N a 2 C O 3 must be dissolved into155 g of water to create a solution with a…

A: Here we have to apply the molality formula

Q: An aqueous solution contains 17.5 g of an unknown molecular compound in 100.0 g of water and has a…

A: Given : aqueous solution of compound (means solvent is water). Mass of solute = 17.5 g Freezing…

Q: An aqueous solution is prepared by dissolving 72.0 g glucose (180.18 g/mol) in enough 1. water to…

A: Number of moles of glucose (solute) is calculated as follows,

Q: What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 420.1 g of water in order…

A: The given data contains, mass of water = 420.1 g. Freezing point = 12.00C

Q: #7 #8 6# C. What is the (a) molality, (b) freezing point, and (c) boiling point of a solution…

A: Given information: Mass of ethylene glycol = 100.0 g Mass of water = 150.0 g Mass of glucose = 55.8…

Q: 0.18 m CoCl2 A. Lowest freezing point2. 0.15 m Ba(NO3)2 B. Second lowest freezing…

A:

Q: What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 380.1 g of water in order…

A: The required mass of CH₃OH to lower the freezing point of water by 12.0 °C is determined as shown in…

Q: During the 9.9 SALE, Otis purchased 1.0 gallon (4.55 L) of antifreeze containing 3.78 L of ethylene…

A: 1.  Molality or molal concentration is defined as the number of moles of solute present per kg of…

Q: Nicotinamide is a water-soluble nonelectrolyte vitamin important in metabolism. Addition of 3.88 g…

A:

Q: 6. The normal freezing point of ethanol is -117.30 °C. How many grams of electrolyte K2SO4 (molar…

A: Given Mass of ethanol = 35 g Kf = 1.99 °C/m T1 = -117.3°C T2 = -120.25 °C Molar masa of K2SO4 = 58.1…

Q: What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 410.1 g of water in order…

A:

Q: What molality of N a Cl is required to lower the freezing point of water to -12.4 degrees C? Use…

A: Given: Freezing point of water with NaCl solution = -12.4 oC And Kf of water = 1.853 oC/m.

Q: Ethylene glycol (EG), CH2(OH)CH,(OH), is a common automobile antifreeze. It is water soluble and…

A:

Q: 15 g of an unknown molecular substance was dissolved in 450 g of water. The resulting solution…

A: The freezing point of a substance is the temperature at which there exists an equlibrium between its…

Q: How many moles of sugar was added to 82.90 g of ethanol to change the freezing point of ethanol by…

A: Given : Mass of ethanol = 82.90g

Q: Acetone (molar mass = 58.0 g mol) has a vapor pressure at a given temperature of 166 torr. At the…

A:

Q: What mass in grams of NaCl would need to be added to 5451 g of water to increase the boiling…

A: →Elevation in boiling point (∆Tb) =i Kbm      where, i=van't  Hoff factor…

Q: Ethylene glycol (EG), CH₂(OH)CH₂(OH), is a common automobile antifreeze. It is water soluble and…

A: Elevation in boiling point and depression in freezing point are colligative properties which deals…

Q: What molality of Na Clis required to lower the freezing point of water to -11.6 degrees C? Use 1.853…

A: Given : freezing point of solution = -11.6 oC Since freezing point of solution = freezing point of…

Q: What is the freezing point of an aqueous solution that boilsat 105.0 °C?

A: As the solution is aqueous so get the value of Kb and Kf with respect to water as, Boiling point…

Q: What is the lowest temperature that is needed to completely dissolve 1000 g of sodium hydroxide in 1…

A: Solubility of a substance is defined as the minimum amount of a substance which can be dissolved in…

Q: Which substance, sucrose or CaCl, has more pronounced effect on the boiling point elevation and…

A: When a solute is added, then there is elevation in boiling point of solution and depression in…

Q: What is the freezing point of 7.0x10^-3m aqueous sodium phosphate, Na3PO4? Use the formula of the…

A:

Q: Assuming complete dissociation of the solute, how many grams of KNO3 must be added to 275 mL of…

A: DISSOCIATION: In chemistry, when a chemical compound is cleaved into its smaller constituents is…

Q: The molality of a solution of ethyl alcohol, (C2H5OH) in water is 0.960 mol/kg. How many grams of…

A: we have given molality and have to calculate mass of alcohol

Q: How many grams of NaCl would need to be added to 3001 g of water to increase the boiling temperature…

A: delta Tb = iKb (mass of NaCl /molar mass of NaCl)*(1000/H2O mass) delta Tb = 1.5 degree celcius. The…

Q: An aqueous solution of hydrofluoric acid is 30.0% HF, by mass, and has a density of 1.101 g cm³.…

A: Given data :

Q: What mass in grams of NaCl would need to be added to 3501 g of water to increase the boiling…

A:

Q: What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 320.1 g of water in order…

A:

Q: How many moles of sugar was added to 82.90 g of ethanol to change the freezing point of ethanol by…

A:

Q: What molality of N a Cl is required to lower the freezing point of water to -10.0 degrees C? Use…

A: The freezing point depression is observed after the addition of solute particles into a solvent,…

Q: How many grams of NaCl would need to be added to 1001 g of water to increase the boiling temperature…

A: Given:Mass of solvent = 1001 g = 1.001 Kg.Van’t Hoff factor for NaCl (i) = 2Change in Boiling point…

Q: A small cube of lithium 1density = 0.535 g/cm32 measuring1.0 mm on each edge is added to 0.500 L of…

A:

Q: when a certain amount of CuCl2 is added to water, the freezing point lowers by 8.5 degrees . What is…

A: a certain amount of CuCl2 is added to water, the freezing point lowers by 8.5 degrees. Kf = 1.86…

Q: A sports drink formulation can be prepared by mixing the ingredients in the quantities shown in the…

A: Since you have asked multiple questions, we will solve first question for you. For remaining…

Q: A solution was prepared using 0.5437 g of sodium chloride (58.44 g/mol) in 650.0 mL of ethanol…

A:

Q: When 86 g of a nonelectrolyte compound are dissolved in exactly 76 g of water, the solution has a…

A:

Q: Assuming complete dissociation of the solute, how many grams of KNO3 must be added to 275 mL of…

A: Given : Freezing point of solution = -14.5 ⁰C  Volume of solvent = 275 ml  Kf = 1.86 ⁰C kg mol-1

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.