Molal boiling point constant

Molal boiling point constant, 269,270t Molal freezing point constant, 269,270t Molality (m) A concentration unit defined as the number of moles of solute per kilogram of solvent, 259,261-262 Molar mass The mass of one mole of a substance, 55,68-68q alcohol, 591 alkane, 591... 

Rearranging the boiling point equation to yield molality and substituting the molal boiling point constant from Table 9-3, you can derive the molality of the solution ... 

Kbp is the molal boiling-point constant, a property of the solvent and independent of the nature of the solutes msolutes refers to the total concentration of independent solute particles whether they are neutral molecules or ions. Thus a 0.01 molal NaCl solution has a total solute con-... 

The molal boiling-point constant of the solvent is kb. As with kf, the numerical value is a property of the solvent alone and is independent of the solute, assuming a solute that is nonvolatile and a nonelectrolyte. Also assumed in the tables presenting kb values is that the pressure is 1 atm (standard pressure). 

A solution contains 10.6 g of a nonvolatile substance dissolved in 740 g of ether. The boiling point of the solution is 0.284°C over the boiling point of pure ether. Molal boiling-point constant for ether is 2.11°C kg/mol. What is the molar mass of the substance ... 

A solution was made up by dissolving 3.75 g of a pure nonvolatile solute in 95 g of acetone. The boiling point of pure acetone was observed to be 55.95 °C, and of the solution, 56.50 °C. If the molal boiling-point constant of acetone is 1.71 °C kg/mol, what is the approximate molar mass of the solute ... 

A solution contains 3.75 g of a nonvolatile pure hydrocarbon in 95 g acetone. The boiling points of pure acetone and the solution are 55.95X and 56.50X, respectively. The molal boiling-point constant of acetone is 1.71X kg/mol. What is the molar mass of the hydrocarbon ... 

COAL 19 Given the freezing-point depression or boiling-point elevation and the molality of a solution, or data from which they may be found, calculate the molal freezing-point constant or molal boiling-point constant. 

The molal boiling-point constant (K, ) is the boiling-point elevation of the solvent in a 1-molal solution of a nonvolatile, nonelecirolyte solute. The... 

For different solvents, the molal boiling-point constants have different values. Some other values for are included in Figure 2.3. Like... 

Find the molal boiling-point constant, Kj, for water in Figure 2.3. To use the equation for boiling-point elevation, A% = Kj m, you need to determine the molality of the solution. 

A compound called pyrene has the empirical formula CgHg. When 4.04 g of pyrene is dissolved in 10.00 g of benzene, the boiling point of the solution is 85.rc. Calculate the molar mass of pyrene and determine its molecular formula. The molal boiling-point constant for benzene is 2.53°C/m. Its normal boiling point is 80.1°C. 

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