Homework Answers
Because the presence of solute particles decreases the vapor pressure of the liquid solvent, a higher temperature is needed to reach the boiling point.
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What happens to the vapor pressure, boiling point, and freezing point of a liquid when a...
Freezing Point Depression Which colligative property of solutions listed below is correctly stated. 1. The freezing...
Freezing Point Depression Which colligative property of solutions listed below is correctly stated. 1. The freezing point of a solution decreases as more solute is added. II. The boiling point of a solution increases as more solute is added. The vapor pressure of a volatile liquid above its solution decreases as more solute is added O a. I and III b. All of these O c. I and II d. I only e. Il and III AN! Absorption & Concentration...
How is vapor pressure related to temperature? What happens to the vapor pressure of a substance...
How is vapor pressure related to temperature? What happens to the vapor pressure of a substance when the temperature is increased? Decreased? Check all that apply. The relationship between vapor pressure and temperature is not linear, but rather, it is exponential. The relationship between vapor pressure and temperature is linear. The vapor pressure of a liquid decreases with increasing temperature. The vapor pressure of a liquid increases with increasing temperature.
Question 14 1 pts Why is the boiling point of an aqueous solution higher than the...
Question 14 1 pts Why is the boiling point of an aqueous solution higher than the boiling point of pure water? Because the temperature increases Because the liquid/gas equilibrium slope is positive on the phase diagram Because the total pressure decreases due to the solute o Because the vapor pressure decreases due to the solute None of the options explain why the boiling point increases
The ____ of a liquid is the boiling point when the surrounding pressure is equal to...
The ____ of a liquid is the boiling point when the surrounding pressure is equal to 1 atm, 101.3 kPa, 760 mm Hg, or 760 torr. normal boiling point normal freezing point boiling point freezing point
A Review Constants Periodic Table The changes in boiling point (AT) or freezing point (AT) in...
A Review Constants Periodic Table The changes in boiling point (AT) or freezing point (AT) in degrees Celsius from a pure solvent can be determined from the equations given here, respectively: AT) = m x K = moles of solute XK K. kilograms of solvent Since pure water boils at 100.00 °C, and since the addition of solute increases boiling point, the boiling point of an aqueous solution, Th, will be T - (100.00+AT) 'C Since pure water freezes at...
9) An increase in the temperature of a solution usually A) increases the boiling point. B)...
9) An increase in the temperature of a solution usually A) increases the boiling point. B) increases the solubility of a gas in the solution. C) increases the solubility of a solid solute in the solution. D) decreases the solubility of a solid solute in the solution. E) decreases the solubility of a liquid solute in the solution. 10) The solubility of Kl is 50 g in 100 g of H20 at 20°C. If 110 grams of Kl are added...
When the vapor pressure of a liquid equals atmospheric pressure, the temperature of the liquid equals...
When the vapor pressure of a liquid equals atmospheric pressure, the temperature of the liquid equals Group of answer choices the boiling point of the liquid the normal boiling point of the liquid 100° C 273 K
A) The normal boiling point of ethanol, CH3CH2OH, is 78.4 ∘C. When 8.45 g of a...
A) The normal boiling point of ethanol, CH3CH2OH, is 78.4 ∘C. When 8.45 g of a soluble nonelectrolyte is dissolved in 100.0 g of ethanol at that temperature, the vapor pressure of the solution is 7.40×102torr. What is the molar mass of the solute?
Which of the following regarding colligative properties of a solution is NOT correct? a. The temperature...
Which of the following regarding colligative properties of a solution is NOT correct? a. The temperature range over which a solution remains liquid is larger than that of the pure solvent due to the presence of solute particles. Cb. Vapor pressure reduction is a colligative property. c. Colligative properties depend on the concentration of the particles dissolved in the solvent. Cd. The freezing point of a solution increases as the concentration of solute increases. e. The change in the boiling...
14. What is the vapor pressure in mmHg of a solution of a solution that contains...
14. What is the vapor pressure in mmHg of a solution of a solution that contains 10.0 g of urea, CHAN20, in 150.0 g of water at 45.0 "C. The vapor pressure of water at 45.0°C is 71.93 mmHg and urea is a nonvolatile solute. 15. What is the freezing point in °C for the above problem? For water, Kr-1.86 °C/m. 16. The van't Hoff factor for KClisi = 1.85. What is the boiling point of a 0.75 m solution...
Freezing Point Depression Which colligative property of solutions listed below is correctly stated. 1. The freezing point of a solution decreases as more solute is added. II. The boiling point of a solution increases as more solute is added. The vapor pressure of a volatile liquid above its solution decreases as more solute is added O a. I and III b. All of these O c. I and II d. I only e. Il and III AN! Absorption & Concentration...
Question 14 1 pts Why is the boiling point of an aqueous solution higher than the boiling point of pure water? Because the temperature increases Because the liquid/gas equilibrium slope is positive on the phase diagram Because the total pressure decreases due to the solute o Because the vapor pressure decreases due to the solute None of the options explain why the boiling point increases
The ____ of a liquid is the boiling point when the surrounding pressure is equal to 1 atm, 101.3 kPa, 760 mm Hg, or 760 torr. normal boiling point normal freezing point boiling point freezing point
A Review Constants Periodic Table The changes in boiling point (AT) or freezing point (AT) in degrees Celsius from a pure solvent can be determined from the equations given here, respectively: AT) = m x K = moles of solute XK K. kilograms of solvent Since pure water boils at 100.00 °C, and since the addition of solute increases boiling point, the boiling point of an aqueous solution, Th, will be T - (100.00+AT) 'C Since pure water freezes at...
9) An increase in the temperature of a solution usually A) increases the boiling point. B) increases the solubility of a gas in the solution. C) increases the solubility of a solid solute in the solution. D) decreases the solubility of a solid solute in the solution. E) decreases the solubility of a liquid solute in the solution. 10) The solubility of Kl is 50 g in 100 g of H20 at 20°C. If 110 grams of Kl are added...
Which of the following regarding colligative properties of a solution is NOT correct? a. The temperature range over which a solution remains liquid is larger than that of the pure solvent due to the presence of solute particles. Cb. Vapor pressure reduction is a colligative property. c. Colligative properties depend on the concentration of the particles dissolved in the solvent. Cd. The freezing point of a solution increases as the concentration of solute increases. e. The change in the boiling...
14. What is the vapor pressure in mmHg of a solution of a solution that contains 10.0 g of urea, CHAN20, in 150.0 g of water at 45.0 "C. The vapor pressure of water at 45.0°C is 71.93 mmHg and urea is a nonvolatile solute. 15. What is the freezing point in °C for the above problem? For water, Kr-1.86 °C/m. 16. The van't Hoff factor for KClisi = 1.85. What is the boiling point of a 0.75 m solution...
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