9. Compare the equal-molarity solutions of table salt (NaCl) in water and sucrose in water to pure water.Which will have the highest boiling point?(A) NaCl in H2O(B) sucrose in H2O(C) pure H2O(D) NaCl in H20 and sucrose in H2O will both have the same boiling point, slightly elevatedcompared to pure H2O

∆Tb = i×Kf×m ∆Tb = Boiling point of solution - Boiling point of Water i is van't hoff…

9. Compare the equal-molarity solutions of table salt (NaCl) in water and sucrose in water to pure water. Which will have the highest boiling point? (A) NaCl in H;O (B) sucrose in H20 (C) pure H2O (D) NaCl in H2O and sucrose in H;O will both have the same boiling point, slightly elevated compared to pure H;O

9. Compare the equal-molarity solutions of table salt (NaCl) in water and sucrose in water to pure water. Which will have the highest boiling point? (A) NaCl in H;O (B) sucrose in H20 (C) pure H2O (D) NaCl in H2O and sucrose in H;O will both have the same boiling point, slightly elevated compared to pure H;O

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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10.0 g of a metal chloride salt is dissolved in 90.0 g H2O. This solution has a vapor pressure that is 8.6% lower than that of pure water at the same temperature. What is the identity of the metal? (A) Li (B) Na (C) Mg (D) Ca
6. Ethylene glycol [CH₂(OH)CH₂(OH)] is a common automobile antifreeze. It is water soluble and fairly nonvolatile (b.p. 197°C). Calculate (a) the freezing point and (b) the boiling point of a solution containing 268 g of ethylene glycol in 1015 g of water.
An aqueous solution is prepared by dissolving 1.50 g of hemocyanin, a protein obtained from crabs, in 0.250 L of water. The solution has an osmotic pressure of 0.00342 atm at 277 K. (a) What is the molar mass of hemocyanin? (b) (b) What should the freezing point of the solution be?
10.Give one example in which a high concentration of a solute is beneficial and one example in which it is harmful 11. Many chemicals that are potentially toxic or harmful to the environment have maximum allowable concentration levels set by government legislation. (a) If the chemical is dangerous, should the limit be zero? (b) Is a zero level theoretically possible? (c) Is a zero-level measurable? (d) If a nonzero limit is set, in your opinion, how should this limit be chosen?
If dissolving 1.5 g of a solute into 100 mL of water caused the temperature of the solution toincrease by 4.7 ⁰C, what would the change of temperature be if 3.0 g of the solute were dissolvedin the same volume of water? Explain.
How many grams of NaOH must be added to 300ml of water at 48°C to have a solution whose vapor pressure is 78 torr. (Vapor pressure of H2O at 48°c is 83.7 torr)
(d) Determine the freezing point and boiling point of the solution. (Assume density of water = 1.00 g/mL; Kf= 1.86oC/m; Kb= 0.512oC/m; density of EG = 1.114 g/mL
At 45 °C, a solution is prepared by mixing 48.0 g Na2SO4 with 240.0 g water. The vapor pressure of water at 45 °C is 71.9 torr. Assuming total dissociation of the salt, determine: (a) mole fraction of Na2SO4; (b) mole fraction of water; (c) vapor pressure of the solution. (molar mass, g/mol: Na2SO4= 142.04; water = 18.02) (a) XNa2s04 = (b) Xwater = (d) Psoln =
If dissolving 1.5 g of a solute into 100 mL of water caused the temperature of the solution toincrease by 4.7 ⁰C, what would the change of temperature be if 3.0 g of the solute were dissolvedin the same volume of water? Explain.
Give correct detailed Solution...don't use Ai for answering this..don't give Handwritten answer
The freezing point of ethanol CH3 CH₂OH is -117.30 °C℃ at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin. How many grams of saccharin, C7H5NO3S (183.2 g/mol), must be dissolved in 278.0 grams of ethanol to reduce the freezing point by 0.300 °C? Refer to the table for the necessary boiling or freezing point constant. Solvent Formula Kb (°C/m) Kf(°C/m) Water H₂O 0.512 Ethanol CH3 CH₂OH 1.22 Chloroform CHCl3 3.67 Benzene C6H6 2.53 Diethyl ether CH3 CH₂ OCH₂ CH3 2.02 Mass= || g 1.86 1.99 5.12