1. What is the vapor pressure at 20°C of a solution of 3.50 g of naphthalene C1,Hg in 25.0 g of benzene (v.p. pure benzene = 74.7 mm Hg at 20°C)

Dibutyl phthalate, C16H2204 (molar mass 278.3g mol-), is an oil sometimes used to soften plastic articles. Its vapor pressure is negligible around room temperature. What is the vapor pressure, at 20.0 °C, of a solution of 11.7 g of dibutyl phthalate in 59.6g of pentane, C5H12 (molar mass 72.14 g mol 4)? The vapor pressure of pure pentane at 20.0 °C is 541 torr. Psolution = i torr eTextbook and Media Hint

Glycerin, C3H3O3, is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 165 g glycerin to 338 mL H20 at 39.8°C? The vapor pressure of pure water at 39.8°C is 54.74 torr and its density is 0.992 g/em. Psoln torr

A solution is made by mixing 100.0 g acetone (CH3COCH3) and 100.0 g methanol (CH3OH). a. What is the vapor pressure of this solution at 25C? b. What is the composition of the vapor expressed as a mole fraction? Assume ideal solution and gas behavior. (At 25 C the vapor pressures of pure acetone and pure methanol are 271 and 143 torr, respectively.) The actual vapor pressure of this solution is 161 torr. Explain any discrepancies.

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The vapor pressure of pure water at 25 ºC is 23.8 torr.  A chemist dissolves 97.2 grams of urea (a nonvolatile electrolyte; M.W. 60.0 g/mole) into 116.2 grams of water. What will now be the vapor pressure of this new aqueous solution at that same temperature?  <include no units in your answer>

1.613 g sample of an unknown nonionizing molecular compound is added to 250.0 g of benzene(C6H6, MW = 78.11 g/mol). The normal freezing point of the solution is 0.17 C lower than the normalfreezing point of pure benzene. Based on this information, find the molecular weight of the unknowncompound. benzene =  Kf = 5.12 kg x Degrees C/mol.

A solution made by dissolving 1.094 g of an unknown nonelectrolyte in 27.386 g of camphor. has a freezing point of 162.1 °C. What is the molar mass of the unknown?       (For camphor Tf = 178.4 °C, and Kf = 37.7 °C/m)

An aqueous solution of sucrose is made by mixing 74.5g sucrose and 295 mL of water. The vapor pressure and density of pure water at 25 degrees Celsius is 23.8 torr and 1.000g/mL. The molar masses of sucrose and water are 342.30 g/mol and 18.02 g/mol. a. what is the vapor pressure of the aqueous solution at 25 degrees Celsius? b. what is the mole fraction of water?       (Explain  all Question  with proper  step by step  Answer. )

The vapor pressure of pure water at 25 °C is 23.76 mm Hg. Calculate the vapor pressure of a solution prepared by mixing 125 g of sucrose (C12H22011) in 500 g H20