In a boiling point elevation experiment, the number of mol of a nonionizing, nonvolatile solute dissolved in benzene is 0.00176 mol. The mass of the solute is 3.55g. What is the approximate molar mass of the nonionizing, nonvolatile substance? Consider amu equivalent to g / mol (molar mass )
A. 20,000 amu
B. 20 amu
C. 2000 amu
D. 500 amu
In a boiling point elevation experiment, the number of mol of a nonionizing, nonvolatile solute dissolved...
1.The freezing point of benzene is 5.5 °C. What is the molar mass of a nonionizing solute if 1.99 grams of the solute added to 20.62 g of benzene lowers the freezing point to 3.44. The Kf of benzene is -5.12 °C/m. Record your answer as a whole number. 2.Water has a Kf of -1.86 °C/m. Calculate the new freezing point of an aqueous solution made by mixing 38.66 g water and 1.64 g MgCl2. 3.Ethanol has a Kb of...
The addition of nonvolatile solute would elevate the boiling point of a substance. Calculate the boiling point of 0.488 kg of ethanol containing 18.21 g of ethylene glycol (C2H6O2). The boiling point of ethanol is 78.4ºC, and Kb of ethanol is 1.22 ºC·kg/mol.
1) Biphenyl, C 12 H 10 , is a nonvolatile, nonionizing solute that is soluble in benzene, C 6 H 6 . At 25 ∘ C, the vapor pressure of pure benzene is 100.84 Torr. What is the vapor pressure of a solution made from dissolving 18.1 g of biphenyl in 29.5 g of benzene? P solution = Tor 2) Assuming 100% dissociation, calculate the freezing point (Tf) and boiling point (Tb) of 2.10 m Na2SO4(aq). Colligative constants can be...
Data were collected to determine the molar mass of a nonvolatile solid solute dissolved in cyclohexane. Complete the table for the analysis. Record calculated values with the correct number of significant figures. Show detailed calculations to the right of the table. Volume of cyclohexane (mL): 15.5 Mass of cyclohexane (kg): _________ Mass of added solute (g): 0.1660 Kf for cyclohexane (˚C/m): 20.0 Freezing point change, ΔTf (˚C): 2.20 Moles of solute (mol): _________ Molar mass of solute (g/mol):__________
1. When 1.00 g of an unknown, nonvolatile, nondissociating solute is dissolved in 50.0 g of camphor, the solution melts at 173.4 C. If pure camphor melts at 178.4 C and has Kf = -37.7 K kg mol', what is the approximate molar mass of the unknown solute?
A solution of 1.10 g of solute dissolved in 25.0 mL of H20 at 25°C has a boiling point of 100.900°C. What is the molar mass of the solute if it is a nonvolatile nonelectrolyte and the solution behaves ideally (d of H,O at 25°C = 0.997 g/mL)? I g/mol
Enter your answer in the provided box. A solution of 1.55 g of solute dissolved in 25.0 mL of H20 at 25°C has a boiling point of 100.850°C. What is the molar mass of the solute if it is a nonvolatile nonelectrolyte and the solution behaves ideally (d of H20 at 25°C = 0.997 g/mL)? g/mol
The freezing point of benzene is 5.5 °C. What is the molar mass of a nonionizing solute if 1.06 grams of the solute added to 24.83 g of benzene lowers the freezing point to 3.97. The Kf of benzene is -5.12 °C/m. Record your answer as a whole number.
1.The presence of a dissolved nonvolatile solute in a solution causes the freezing point to be _____________ (raised, lowered) compared to that of the pure solvent. The change in freezing point of the solvent can be calculated using the equation: 2.The presence of a dissolved nonvolatile solute in a solution causes the boiling point to be _____________ (raised, lowered) compared to that of the pure solvent. The change in boiling point of the solvent can be calculated using the equation:...
A solution of 1.65 g of solute dissolved in 25.0 mL of H2O at 25°C has a boiling point of 100.350°C. What is the molar mass of the solute if it is a nonvolatile nonelectrolyte and the solution behaves ideally (d of H2O at 25°C = 0.997 g/mL)?