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13. A solution made by dissolving 10.25 g naphthalene (C₁oHs, non- electrolyte, molar mass= 128.0 g/mol) into 200.0 g benzene (molar mass=78.0 g/mol, freezing point of benzene = 5.5 °C, K = 65.6 °C). What is the freezing point of this solution (in °C )?- a) 3.5 b) 4.0 c) 2.9 d) 2.6 e) 5.0

13. A solution made by dissolving 10.25 g naphthalene (C₁oHs, non- electrolyte, molar mass= 128.0 g/mol) into 200.0 g benzene (molar mass=78.0 g/mol, freezing point of benzene = 5.5 °C, K = 65.6 °C). What is the freezing point of this solution (in °C )?- a) 3.5 b) 4.0 c) 2.9 d) 2.6 e) 5.0

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.109QP: A 21.3-mL sample of 0.977 M NaOH is mixed with 29.5 mL of 0.918 M HCl in a coffee-cup calorimeter...
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please solve quesssssstion 13

11. When a 1.0 g of material X ( molar mass = 40 g/mol) was dissolved in beaker containing 50.0 g of 1.0 M HCl, the rise in temperature was 7.0 °C. If the AH for this reaction is -74.8 kJ/mol of material X. and the specific heat of the solution = 4.10 J/g.°C, calculate the heat capacity of the beaker (J/ °C). a) 66 b) 58 c) 74 d) 47 e) 40 مج الدب 24: الجمعة شارع الجامعة الأرنية ـ مقايا - Skj Collegative properties 12. Which of the following statements is correct: a) If the reported mass of cyclohexane is greater than the actual value. b) K, is dependent on the solute only. c) If the solute used was not dissolved completely, the freezing point depression will be larger than actual. d) If the thermometer used reads 1.0 °C lower than actual, then the calculated molar mass would be lower than actual. e) The greater the mole fraction of the solute, the lower the freezing point of the solution. A solution made by dissolving 10.25 g naphthalene (C₁0Hs, non- electrolyte, molar mass= 128.0 g/mol) into 200.0 g benzene (molar mass = 78.0 g/mol, freezing point of benzene = 5.5 °C, K = 65.6 °C). What is the freezing point of this solution (in °C)?: a) 3.5 b) 4.0 c) 2.9 d) 2.6 e) 5.0 14443 67844443
Transcribed Image Text:11. When a 1.0 g of material X ( molar mass = 40 g/mol) was dissolved in beaker containing 50.0 g of 1.0 M HCl, the rise in temperature was 7.0 °C. If the AH for this reaction is -74.8 kJ/mol of material X. and the specific heat of the solution = 4.10 J/g.°C, calculate the heat capacity of the beaker (J/ °C). a) 66 b) 58 c) 74 d) 47 e) 40 مج الدب 24: الجمعة شارع الجامعة الأرنية ـ مقايا - Skj Collegative properties 12. Which of the following statements is correct: a) If the reported mass of cyclohexane is greater than the actual value. b) K, is dependent on the solute only. c) If the solute used was not dissolved completely, the freezing point depression will be larger than actual. d) If the thermometer used reads 1.0 °C lower than actual, then the calculated molar mass would be lower than actual. e) The greater the mole fraction of the solute, the lower the freezing point of the solution. A solution made by dissolving 10.25 g naphthalene (C₁0Hs, non- electrolyte, molar mass= 128.0 g/mol) into 200.0 g benzene (molar mass = 78.0 g/mol, freezing point of benzene = 5.5 °C, K = 65.6 °C). What is the freezing point of this solution (in °C)?: a) 3.5 b) 4.0 c) 2.9 d) 2.6 e) 5.0 14443 67844443
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