The observed vapor pressure lowering of a calcium chloride solution is 5.00 Torr at 20.0 degrees...
The observed vapor pressure lowering of a calcium chloride solution is 5.00 Torr at 20.0 degrees celsius. Calculate the molality of the calcium chloride in the solution.
Homework Answers
Firstly calculate the mass of Calcium
chloride by reletive lowering in vapor pressure formula
P-Ps/P=wM/mW, then put the value of weight of CaCl2 (w) in molality formula m=weight of CaCl2×1000/molar mass of CaCl2×weight of water.
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The observed vapor pressure lowering of a calcium chloride
solution is 5.00 Torr at 20.0 degrees...
the observed vapor pressure lowering of a CaCl2 solution is 5 Torr at 20C. Calculate the...
the observed vapor pressure lowering of a CaCl2 solution is 5 Torr at 20C. Calculate the molality of the CaCl2 in the solution
At 20.0°C, the vapor pressure of ethanol is 45.0 torr, and the vapor pressure of methanol...
At 20.0°C, the vapor pressure of ethanol is 45.0 torr, and the vapor pressure of methanol is 92.0 torr. What is the vapor pressure at 20.0°C of a solution prepared by mixing 24.0 g methanol and 80.0 g ethanol?
vapor pressure lowering of aqueous solutions
Given that the vapor pressure of water is 17.54 Torr at 20 °C, calculate the vapor-pressure lowering of aqueous solutions that are 1.70 m in (a) sucrose, C12H22O11,and (b) sodium chloride. Assume 100% dissociation for electrolytes.I have the answer for sucrose but i still need sodium chloride
An aqueous calcium chloride solution has a vapor pressure of 80.8mmHg at 50 ?C. The vapor...
An aqueous calcium chloride solution has a vapor pressure of 80.8mmHg at 50 ?C. The vapor pressure of pure water at this temperature is 92.6 mmHg. (Assume calcium chloride completely dissociates.) -What is the concentration of calcium chloride in mass percent?
An aqueous solution containing glucose has a vapor pressure of 17.1 torr at 25 degrees C....
An aqueous solution containing glucose has a vapor pressure of 17.1 torr at 25 degrees C. What would be the vapor pressure of this solution at 45 degrees C? The vapor pressure of pure water is 23.8 torr at 25 degrees C and 71.9 torr at 45 degrees C. If the glucose in the solution were substituted with an equivalent amount (moles) of NaCl what would be the vapor pressure at 45 degrees C?
At 387.5 degrees C, the vapor pressure of K is 3.25 torr and that of Hg...
At 387.5 degrees C, the vapor pressure of K is 3.25 torr and
that of Hg is 1280 torr. Over a solution 50 mol % of K in Hg, the
vapor pressure of K is 1.07 and that of Hg 13.0 torr. Calculate the
activities and activity coefficients of K and Hg in the solution.
Calculate the
mixG of 0.5 mol of K and 0.5 mol Hg at 387.5 degrees C. If the
mixS is ideal, calculate the
mixH for...
Predict the vapor pressure in torr at 25 degrees C of a solution prepared by mixing...
Predict the vapor pressure in torr at 25 degrees C of a solution prepared by mixing 16.8 g sodium phosphate with 87.15 mL of water. Assume the density of water to be 0.977 g/cm3 . The vapor pressure of pure water at 25 degrees is 23.76 torr
At 20 degrees celcius , the vapor pressur of ethanol is 45 torr and the vapor...
At 20 degrees celcius , the vapor pressur of ethanol is 45 torr and the vapor pressure of methanol is 92 torr. What is the vapor pressure at 20 degrees celcius of a solution prepared by mixing 25 grams of methanol and 75 grams of ethanol ?
Predict the vapor pressure in torr of a solution prepared by mixing 17.24 g of solid...
Predict the vapor pressure in torr of a solution prepared by mixing 17.24 g of solid NaCl with 55.4 g of water at 25 degrees C. The vapor pressure of pure water at 25 degrees C is 23.76 torr.
Calculate the vapor pressure at 25 degrees C of an aqueous solution that is 5.50% NaCl...
Calculate the vapor pressure at 25 degrees C of an aqueous solution that is 5.50% NaCl by mass. The pure vapor pressure of water at this temperature is 23.78 torr.
At 387.5 degrees C, the vapor pressure of K is 3.25 torr and
that of Hg is 1280 torr. Over a solution 50 mol % of K in Hg, the
vapor pressure of K is 1.07 and that of Hg 13.0 torr. Calculate the
activities and activity coefficients of K and Hg in the solution.
Calculate the
mixG of 0.5 mol of K and 0.5 mol Hg at 387.5 degrees C. If the
mixS is ideal, calculate the
mixH for...
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