17. A solution is prepared by dissolving 5.00 g of aspirin, C9H3O4, in 215 g of...
18. What osmotic pressure in atmospheres would you expect for each of the following solutions? a) 5.00 g of NaCl in 350.0 mL of aqueous solution at 50 °C b) 6.33 g of sodium acetate, CH3CO2Na, in 55.0 mL of aqueous solution at 10 °C. 19. Human blood gives rise to an osmotic pressure of approximately 7.7 atm at body temperature, 37.0 °C. What must the molarity of an intravenous glucose solution be to give rise to the same osmotic...
a. Consider these two solutions: Solution A is prepared by dissolving 5.00 g of MgCl2 in enough water to make .250 L of solutions, and Solution B is prepared by dissolving 5.00 g of KCl in enough water to make .250 L of solution. Which direction will solvent initally flow if these two solutions are seperated by a semipermeable membrane? b. Assuming that the volumes of the solutions described in question 4 are additive and igoring any effects that gravity...
What osmotic pressure (in atmospheres) would you expect for each of the following solutions? 5.70 g of NaCl in 357.0 mL of aqueous solution at 54 ∘C. 6.63 g of sodium acetate, CH3CO2Na, in 56.5 mL of aqueous solution at 11 ∘C.
A solution is prepared by dissolving 5.00 g of glycerin () in 201 g of ethanol The freezing point of the solution is ________°C. The freezing point of pure ethanol is -114.6 °C at 1 atm. The molal-freezing-point-depression constant () for ethanol is 1.99 °C/m. The molar masses of glycerin and of ethanol are 92.1 g/mol and 46.1 g/mol, respectively. -115.1 -119.4 0.537 -109.8 -114.1
18. Four aqueous solutions are prepared by dissolving 10 g of each of the following solutes enough water to make a 1 M solution: benzene, KI, CaCl2, and AlBr3. Whe solution has the smallest osmotic pressure at 10 °C? Report the osmotic (in atm to two decimal places) for each solution. A: CaCl2 has largest osmotic pressure.
Find the boiling and freezing point of a solution prepared by dissolving 12.5g of naphthalene (C10H8) in 450g of chloroform. Melting and freezing points of pure chloroform are -36.5 celsius and 61.2 celsius.
1. A solution was prepared by dissolving 2.20g of urea (H2NCONH2) in 50.00g of water. If for H2O Tb = 100C, Tf = 0C, Kb = 0.52C / m and Kf = 1.86C / m, determine the freezing and boiling point of the solution. 2. A solution is prepared by dissolving 17.41g of a substance X in 600g of benzene and the resulting solution is frozen at 4.00C. If the freezing point of pure benzene is 5.55C and its Kf...
Vapor pressure of solvent decreases 7. A solution prepared by dissolving 65.0 g of DMG in 375 g of ethanol boils at 80.3 °C. What is the molar mass of DMG? Kb = 1.22 °C/m, boiling point of pure ethanol = 78.5 °C
A solution is prepared by dissolving 7.8 g of ethylene glycol (HOCH2CH2OH) in 50.0 g of water to produce 56.9 mL of solution. Ethylene glycol is non-volatile. a. What is the vapor pressure of the solution at 100oC? b. What is the boiling point of the solution? Kb = 0.51 oC/m
The nonvolatile, nonelectrolyte aspirin, C9H8O4 (180.1 g/mol), is soluble in chloroform, CHCl3. Calculate the osmotic pressure generated when 12.0 grams of aspirin are dissolved in 179 ml of a chloroform solution at 298 K. The molarity of the sollution is? The osmotic pressure of the solution is?