A solution is prepared from 4.5743 g of magnesium chloride and 43.246 g of water. The vapor pressure of water above this solution is found to be 0.3630 atm at 348.0 K. The vapor pressure of pure water at this temperature is 0.3804 atm. Find the value of the van't Hoff factor i for magnesium chloride in this solution.
Answer:-
This question is solved by using the simple concept of relative lowering of vapor pressure using simple formula.
The answer is given in the image,
A solution is prepared from 4.5743 g of magnesium chloride and 43.246 g of water. The...
A solution is prepared from 4.5728 gg of magnesium chloride and 43.236 gg of water. The vapour pressure of water above this solution is found to be 0.3630 barbar at 348.0 KK. The vapour pressure of pure water at this temperature is 0.3804 barbar. Find the value of the van't Hoff factor (ii) for magnesium chloride in this solution.
A saline solution contains 7.6 g of NaCl in 1.00 kg of water. Assuming an ideal value for the Van't Hoff factor, i, calculate the freezing point of this solution in °C out of Answer 18 A saline solution contains 79 g of NaCi per 0.60 iter of solution. Assuming an ideal value for the van't Hoff factor, calculate the osmotic pressure (in atm) of this solution at 288 K out of Answer 19 A reverse osmosis unit is used...
An aqueous magnesium chloride solution having a density of 1.049 g/cm3 is found to have an osmotic pressure of 17.0 atm at 25°C. Find the temperature at which this solution boils.
4. A solution is prepared by combining 15.00 g of ethylene glycol with 135.00 g water. These liquids are “miscible” in each other (what does this mean?) The van’t Hoff factor for ethylene glycol is 1.0 What is the effect on the following properties of the solution compared to the pure solvent, water? Boiling point higher, lower, the same Freezing point higher, lower, the same Vapor pressure higher, lower, the same 5. Tree sap can be a very concentrated solution...
5. 1.024 g of an unknown molecular solid are dissolved in enough
water to produce 200.0 mL of solution. The osmotic pressure at 25C
is 278.0 torr. What is the molar mass of the solid?
6a. Calculate the van't Hoff factor of a 0.085M potassium
sulfate solution that has an osmotic pressure of 5.4atm at
25C
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0 ml. of solution. The osmotic pressure at 25...
An NaCl solution is prepared by dissolving 20.0 g NaCl in 150.0 g of water at 25°C. What is the vapor pressure of the solution if the vapor pressure of water at 25°C is 0.031 atm?
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...
Please SHOW WORK 1) what is the concentraton of chloride ions in a solution prepared by mixing 100.0mL of a 0.100M NaCl solution with 100.0mL of a 0.100M MgCl2 solution? 2) Suppose that 0.1g of H20(g) is placed in a tank with a volume of 10.0L. Calculate the pressure of the water vapor (in Torr) in the tank assuming that the temperature is 25.0C
A reverse osmosis unit is used to obtain drinkable water from a source that contains 0.750 g NaCI per liter. What is the minimum pressure (in torr) that must be applied across the semipermeable membrane to obtain water? Assume room temperature or about 298 K. (Don't forget the van't Hoff factor!)
Determine the molarity of each of the following solutions from its osmotic pressure at 25°C. Include the van't Hoff factor for the solution when the factor is given. Part 1 II = 0.0211 atm for a solution of urea (CH4N2O): Part 2 II = 0.664 atm for a solution of KI, i=1.90:What molality of a nonvolatile, nonelectrolyte solute is needed to raise the boiling point of water by 7.35°C (K- 0.520°C/m)?