14:00Boiling point elevation and freezing point depression | Chemistry | Khan AcademyKhan Academy526views
25:23Colligative Properties - Boiling Point Elevation, Freezing Point Depression & Osmotic PressureThe Organic Chemistry Tutor431views
Multiple ChoiceAn ethylene glycol solution contains 25.2 g of ethylene glycol (C2H6O2) in 99.5 mL of water. Determine the change in boiling point. Assume a density of 1.00 g/mL for water.1147views1rank
Multiple ChoicePure water boils at 100°C. What is the new boiling point of water after the addition of 13.12 g aluminum chloride, AlCl3, to 615 g water? 1617views2rank
Multiple ChoiceWhat is the molality of glucose in an aqueous solution if the boiling point of the solution is 103.15°C?920views
Multiple ChoiceCarbon dioxide is dissolved in 722 mL of benzene with a density of 1.59 g/mL. What mass of carbon dioxide would you add to make the boiling point of the solution 104.7°C?626views2rank2comments
Multiple ChoiceCalculate ΔTb for a solution that is prepared by dissolving 2.50 g Ca(NO3)2 in 2.00 L of water. Assume that the density of water = 1.00 g/mL and that ;Kb for water is 0.512 °C /m228views
Textbook QuestionThe following phase diagram shows part of the liquid–vapor phase-transition boundaries for pure ether and a solution of a nonvolatile solute in ether. (b) What is the approximate mo#lal concentration of the sol-ute? [Kb for ether is 2.021°C kg2>mol.]445views
Textbook QuestionAdrenaline is the hormone that triggers the release of extra glucose molecules in times of stress or emergency. A solution of 0.64 g of adrenaline in 36.0 g of CCl4 elevates the boiling point by 0.49 °C. Calculate the approximate molar mass of adrenaline from this data.834views
Textbook QuestionA 1.2 m aqueous solution of an ionic compound with the formula MX2 has a boiling point of 101.4 °C. Calculate the van't Hoff factor (i) for MX2 at this concentration.1518views
Textbook QuestionCarbon disulfide 1CS22 boils at 46.30 °C and has a density of 1.261 g>mL. (a) When 0.250 mol of a nondissociating solute is dissolved in 400.0 mL of CS2, the solution boils at 47.46 °C. What is the molal boiling-point-elevation constant for CS2?1031views1rank
Textbook QuestionA solution prepared by dissolving 5.00 g of aspirin, C9H8O4, in 215 g of chloroform has a normal boiling point that is elevated by ΔT = 0.47 °C over that of pure chloro- form. What is the value of the molal boiling-point-elevation constant for chloroform?482views
Textbook QuestionA solution of citric acid, C6H8O7, in 50.0 g of acetic acid has a boiling point elevation of ΔT = 1.76 °C. What is the molality of the solution if the molal boilin# g-point-elevation constant for acetic acid is Kb = 3.07 1°C kg2>mol.787views
Textbook QuestionWhat is the boiling point of a 0.10 M solution of NaHSO4 if the solution has a density of 1.002 g>mL?491views
Textbook QuestionA 100.0-mL aqueous sodium chloride solution is 13.5% NaCl by mass and has a density of 1.12 g>mL. What would you add (solute or solvent) and what mass of it to make the boiling point of the solution 104.4 °C? (Use i = 1.8 for NaCl.)1911views1comments
Open QuestionDetermine the boiling point of a solution that contains 78.8 g of naphthalene (C10H8, molar mass = 128.16 g/mol) dissolved in 722 mL of benzene (d = 0.877 g/ml). Pure benzene has a boiling point of 80.1°C and a boiling point elevation constant of 2.53°C/m.206views
Open QuestionA solution of toluene (C₇H₈) in 301 g of cyclohexane (C₆H₁₂) has a boiling point of 90.30°C. what quantity in moles of toluene are in the solution? (for cyclohexane kb = 2.92°C/m, normal boiling point, Tb = 80.90°C)340views
Open QuestionDetermine the boiling point of a solution that contains 78.8 g of naphthalene (C10H8, molar mass = 128.16 g/mol) dissolved in 722 ml of benzene (d = 0.877 g/ml). Pure benzene has a boiling point of 80.1°C and a boiling point elevation constant of 2.53°C/m.312views