1. . NaCl is dissolved in water. Which of the following statements is incorrect? (a) Boiling point of the solution is increased (b) Freezing point of the solution is deceased (c) Vapor pressure of the solution is decreased (d) The solution will boil at 100'C as NaOH is a volatile solute 2. 20 grams of NAOH dissolved in 500 ml of water, molarity of the solution is ? (a) 2M (c) 1.4M (b) IM (d) 4M 3. The flow of solvent molecules into solution through a semi permeable membrane is called (a) osmosis (b) viscosity (e) fugacity (d) diffusion

1. . NaCl is dissolved in water. Which of the following statements is incorrect? (a) Boiling point of the solution is increased (b) Freezing point of the solution is deceased (c) Vapor pressure of the solution is decreased (d) The solution will boil at 100'C as NaOH is a volatile solute 2. 20 grams of NAOH dissolved in 500 ml of water, molarity of the solution is ? (a) 2M (c) 1.4M (b) IM (d) 4M 3. The flow of solvent molecules into solution through a semi permeable membrane is called (a) osmosis (b) viscosity (e) fugacity (d) diffusion

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...

See similar textbooks

Similar questions

Calculate the amount of water (in grams) that must be added to each of the following substances to produce the indicated solution. (a) 3.10 g of urea (NH;)½CO in the preparation of a 12.4 percent by mass solution: g (b) 21.5 g of MgCl, in the preparation of a 3.1 percent mass solution: g
acid, CH3COOH, is 1.0187 g/mL. What is (a) the molarity? (b) the molality? (c) the mole fraction of each component?
The freezing point of ethanol, CH3CH₂OH, is -117.300 °C at 1 atmosphere. Kethanol) = 1.99 °C/m In a laboratory experiment, students synthesized a new compound and found that when 10.78 grams of the compound were dissolved in 294.9 grams of ethanol, the solution began to freeze at -117.697 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound? g/mol
A solution is prepared by mixing 50.0 mL of ethanol (C2H5OH; molar mass = 46.068 g/mol) in 100.0 mL of water at 20°C. The density of water and ethanol at 20°C are 1.00 g/mL and 0.789 g/mL, respectively. What is the molality of ethanol? (A) 0.086 m (B) 0.094 m (C) 1.24 m (D) 8.56 m
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?
The density of an aqueous solution containing 20.0 percent of ethanol by mass is 0.986 g/mL. (a) Calculate the molality of this solution. (b) Calculate the molarity of this solution. O
A solution is prepared by dissolving 215 g of methanol, CH3OH, in 1000 mL of water. What is the freezing point of this solution?
The freezing point of benzene CGH6 is 5.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is DDT. How many grams of DDT, C14H,Cl5 (354.5 g/mol), must be dissolved in 207.0 grams of benzene to reduce the freezing point by 0.400°C ? Refer to the table for the necessary boiling or freezing point constant. Formula | K, (°C/m) Kf(°C/m) Solvent Water H20 0.512 1.86 Ethanol CH;CH,OH 1.22 1.99 Chloroform CHC13 3.67 Benzene CH6 2.53 5.12 Diethyl ether CH;CH,OCH,CH3 2.02 g DDT.
when 7.94 g of xylene was added to 132.5 g of cyclohexane, the freezing point of the solution was -4.9 C. what is the molar mass of xylene?
A small cube of lithium 1density = 0.535 g/cm32 measuring1.0 mm on each edge is added to 0.500 L of water. Thefollowing reaction occurs:2 Li1s2 + 2 H2O1l2¡2 LiOH1aq2 + H21g2What is the freezing point of the resulting solution, assumingthat the reaction goes to completion?
(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
If 770 g of ethylene glycol (C2H6O2) is added to 1,000. g of water, what is the freezing point? ° C