The boiling point of benzene C,H, is 80.10°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is testosterone. How many grams of testosterone, C19H2802 (288.4 g/mol), must be dissolved in 267.0 grams of benzene to raise the boiling point by 0.350 °C ? Refer to the table for the necessary boiling or freezing point constant. Solvent Formula K CC/m) Kr ("C/m) Water H,0 0.512 1.86 Ethanol CH;CH,OH 1.22 1.99 CHCI3 CH6 Chloroform 3.67 Benzene 2.53 5.12 Diethyl ether CH;CH,OCH,CH, 2.02 g testosterone.

A solution consists of 0.901 moles of toluene (C7H8) and 0.600 moles of cyclohexane (C6H12).  The vapor pressures of toluene and cyclohexane at 25oC are 28.4 mmHg and 107.5 mmHg, respectively.  What is the mole fraction of toluene in the vapor above this solution at 25oC?

What would be the molar mass of a nonionic compound if 5.96 g of it is dissolved in 25.0 g of chloroform solvent to form a solution which has a boiling point elevation of 4.80∘C? Given that the boiling point constant of pure chloroform is 3.63∘C.

Ethylene glycol (C₂H₆O₂) is used as an additive to the water in your automobile to lower its freezing point. A solution of ethylene glycol in water has a freezing point of -8.10 °C. What is the mole fraction of ethylene glycol in this solution? (Kf for water is 1.86 °C･kg/mol).

Q5. Show the step-by-step process. Do not use shortcut methods. Make it as detailed as it can be.

The freezing point of benzene CGH6 is 5.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is DDT. How many grams of DDT, C14H,Cl5 (354.5 g/mol), must be dissolved in 207.0 grams of benzene to reduce the freezing point by 0.400°C ? Refer to the table for the necessary boiling or freezing point constant. Formula | K, (°C/m) Kf(°C/m) Solvent Water H20 0.512 1.86 Ethanol CH;CH,OH 1.22 1.99 Chloroform CHC13 3.67 Benzene CH6 2.53 5.12 Diethyl ether CH;CH,OCH,CH3 2.02 g DDT.

How many moles of C,H,0 were dissolved into 91.340 g of ethylene glycol, if the freezing point of the resulting ideal C,H,O-ethylene glycol solution was –15.1 °C? freezing point of ethylene glycol =-12.9 °C kf(ethylene glycol) = 3.11 °C/m

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.

In a solution of acetone and water, the mole fraction of water is 0.573. If the vapor pressure of pure water and pure acetone at 25 ºC are 23.8 mmHg and 51.2 mmHg, respectively, what is the mole fraction of water in the vapor phase.  Give your answer to three sig figs.

Biphenyl, C1,H10, is a nonvolatile, nonionizing solute that soluble in benzene, C,H6. At 25 °C, the vapor pressure of pure benzene is 100.84 Torr. What is the vapor pressure of a solution made from dissolving 17.8 g of biphenyl in 30.3 g of benzene? Psolution Torr II