The boiling point of a solution with respect to the corresponding solvent is to be determined. The measured boiling point for the solvent, with its absolute error, is 177±2°C; and that of the solution, 183±4°C. Regarding this measurement, which of the following statements is correct?(A). A significant value for the boiling point increase cannot be given for this experiment(B). The boiling point increase is 6±4°C(C). The relative error in the measurement of the boiling point of the solution is twice the relative error in the measurement of the boiling point of the pure solvent(D). The relative error in the boiling point increase is, in round numbers, 2%

1. (a) In the experiment carried out to determine the degree of association of benzoic acid in benzene (C6H6), the cooling curves of pure benzene and benzoic acid solution prepared by dissolving 0.358 g benzoic acid in 20 mL of benzene were obtained by using Beckmann thermometer, calibrated before the experiment. The cooling curves are given in the figure below. Calculate the degree of association of benzoic acid in benzene for the given solution. Ky= 5.055 K kg.mol-¹, dbenzene- 0.876 g.cm³, MBenzoic acid=122.12 g.mol-¹ T(°C) 2.88 2.38 Benzene Solution t(min)

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19 g of unknown organic sample was dissolve in 640 mL of Dicloromethane (DCM). The boiling point of benzene was increased by 3.78oC. Determine the molecular weight of the unknown sample?  Kb of DCM = 2.42oC/m Bb of benzene = 39.6 oC density of benzene = 1.33  g/mL at 25 °C    Round your answer to the nearest whole number, no units required.

When 127. mg of a certain molecular compound X are dissolved in 55.0 g of dibenzyl ether point of the solution is measured to be 1.6 °C. Calculate the molar mass of X. If you need any additional information on dibenzyl ether, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. ((C6H₂CH₂)₂0), 2 the freezing OO B olo Xu

In the experiment of making salted eggs, a cleaned egg is immersed in a solution a lot of Nacl salt. Nacl in solution diffuses into the egg through the eggshelI, then towards the egg whites and yolks. Eggs can be considered perfectly spherical in shape with the radius in R and the thickness of the eggshell is T. The concentration of NaCl in the soaking solution is Caci,o and its value can be considered constant during the immersion process. Before being included in soaking solution, there is no Nacl in egg whites and egg yolks. Diffusion through eggshell can be ignored because it occurs very quickly. If the diffusivity coefficient of Nacl in egg white and egg yolk can be considered equal (DNaci), a. Use the component continuity equation table, so that the equation that is describe the profile of Nacl concentration in eggs (in the form of a differential equation along with the boundary conditions). b. Convert the equation obtained in point a into an equation of the form dimensionless…

I2 is considerably more soluble in CC4 (1) than it is in H2O(1). At a certain temperature, the concentration of I2 in its saturated aqueous solution is 1.300 x 10-3 M, and the equilibrium achieved when I2 distributes itself between H2 O and CC4 is I2 (aq) = I2 (CC14), K=85.5

The following evidence was obtained from an experiment to determine the solubility of calcium chloride at room temperature. A sample of saturated calcium chloride solution was evaporated to dryness, and the mass of solid residue was measured.EvidenceVolume of solution (mL) = 15.0Mass of empty beaker (g) = 90.54Mass of beaker and residue (g) = 101.36The solubility of calcium chloride is                     g/100 mL

(1a) Pure benzophenane freezes at 66.6 °C. A solution of 7.75 g of biphenyl (C12H10; molar mass = 154.2g/mol) plus 200.08 g of benzophenane froze at 59.9 °C. Calculate the Kf of benzophenane in °C*kg/mol. (b) An unknown solution with possible cations (Ag+, Hg22+, Pb2+) is treated with 6M HCl and a white precipitate forms. Hot water is added to the precipitate, and a white solid remains after filtration. The white solid is treated with aqueous NH3, and the precipitate turns grey or black. The resulting solution is treated with HNO3 and no precipitate forms. What cations can you determine to be present, absent or maybe present? Explain your reason

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