A solution is prepared from 4.5728 gg of magnesium chloride and 43.236 gg 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.
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A solution is prepared from 4.5728 gg of magnesium chloride and
43.236 gg of water. The...
A solution is prepared from 4.5743 g of magnesium chloride and 43.246 g of water. The...
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.
A saline solution contains 7.6 g of NaCl in 1.00 kg of water. Assuming an ideal...
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...
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.
b. You have prepared a solution of water-soluble polymer, and wish to isolate the polymer from...
b. You have prepared a solution of water-soluble polymer, and wish to isolate the polymer from the water by freeze drying it. This process involves two steps: i) The temperature of the solution is dropped at ambient pressure to a temperature below water's triple point. ii) The pressure of the frozen solution is reduced until water spontaneously leaves the system With this above in mind, sketch a phase diagram of water showing regions of stability in its solid, liquid, and...
4. A solution is prepared by combining 15.00 g of ethylene glycol with 135.00 g water....
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...
QUESTION 31 A solution was made by dissolving 26.5g of Na2CO3 in 500.0 mL of water....
QUESTION 31 A solution was made by dissolving 26.5g of Na2CO3 in 500.0 mL of water. What is the molality of this solution? (1.0g of water -1.0 ml of water) 11 Na23.6C128016 OA 0.25 m OB. 0.25 M OC 0.5M OD 0.5 m E. None of above QUESTION 32 Molarity (M) of a solution varies with O A Pressure O Temperature OC Partial pressure D. Both A and B OE. Both A and C QUESTION 33 Which of the following...
A saturated solution of magnesium fluoride , MgF2, was prepared by dissolving solid MgF2 in water. The concentration of...
A saturated solution of magnesium fluoride , MgF2, was prepared by dissolving solid MgF2 in water. The concentration of Mg2+ ion in the solution was found to be 1.18
1. A saturated solution of lead(II) chloride was prepared by dissolving PbCl2 solid in water. The concentration of Pb+2...
1. A saturated solution of lead(II) chloride was prepared by dissolving PbCl2 solid in water. The concentration of Pb+2 ion in the solution was found to be 1.62*10^-2M . Calculate Ksp for PbCl2 . 2. The value of Ksp for silver chromate, Ag2CrO4 is 9.0*10^-12 . Calculate the solubility of Ag2CrO4 in grams per liter.
A reverse osmosis unit is used to obtain drinkable water from a source that contains 0.750...
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.
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)?
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...
b. You have prepared a solution of water-soluble polymer, and wish to isolate the polymer from the water by freeze drying it. This process involves two steps: i) The temperature of the solution is dropped at ambient pressure to a temperature below water's triple point. ii) The pressure of the frozen solution is reduced until water spontaneously leaves the system With this above in mind, sketch a phase diagram of water showing regions of stability in its solid, liquid, and...
QUESTION 31 A solution was made by dissolving 26.5g of Na2CO3 in 500.0 mL of water. What is the molality of this solution? (1.0g of water -1.0 ml of water) 11 Na23.6C128016 OA 0.25 m OB. 0.25 M OC 0.5M OD 0.5 m E. None of above QUESTION 32 Molarity (M) of a solution varies with O A Pressure O Temperature OC Partial pressure D. Both A and B OE. Both A and C QUESTION 33 Which of the following...
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)?
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