Assume an organic compound has a partition coefficient between water and ether equal to 7.34. If there are initially 8.67 g of the compound dissolved in 70.0 mL of water, how many grams will remain in the aqueous layer after each extraction with three 15.0 mL portions of ether? mass remaining after the first extraction: g

Assume an organic compound has a partition coefficient between water and ether equal to 7.34. If there are initially 8.67 g of the compound dissolved in 70.0 mL of water, how many grams will remain in the aqueous layer after each extraction with three 15.0 mL portions of ether? mass remaining after the first extraction: g

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

(a) Write a material-balance expression for a solution that is saturated with CaC3H₂O4(s) (Note: C3H₂O42 in water hydrolyzes to form HC3H₂O4, which in turn hydrolyses to form H₂C3H₂O4..... Also note: H₂C3H2O4 = HO₂C-CH₂-CO₂H (malonic acid) (b) Write a charge-balance equation for this solution.
(ISCN Data Report Sheet: Spectrophotometric Determination of an Equilibrium Constant. Part A: Determination of a Calibration Curve; Stnd.1 Std. 2 Stnd. 3 Stnd 4 Sind. 5 Stad. 6 (Но) 0.000090 0.000106 0.000127 0.000189 0.000204 (Fe(SCN)"] Column A 0.432 0.480 0.633 0.831 0.887 Absorbance Column E 0. y= 4339.8x + 0.0258 Equafion of Calibration Line: 0.9904 Correlation Coefficient; 4339.8 Slope (br): Part B: Determination of K Expt. 1 Еxpt, 2 Expt. 3 Expt. 4 Expt. 5 0,00165 0.00165 0.00165 0.00165 000165 (Table 1) 0.00033 0.00066 0.00099 0.001 0.00165 ISCN at (Table 1) 0.290 0.524 0.803 1.024 1.199 [Fe(SCN)*l Column F |Fe"leqt 148.6799 135.1678 142.2659 141 8466 134.2843 Average K:140 448 I
A chemist wants to determine the Ksp of BaC2O4 at T = 285.15 K. He prepared 0.10 L of saturated solution by putting the solid in distilled water maintained at the given T. The solution was filtered, in which a 0.01 L aliquot of the filtrate was drawn. The chemist finds that 0.0107 L of 5.60 x 10-4 M hydrochloric acid was used to reach the endpoint. If 2 mol HCl reacts with 1 mol of dissolved oxalate during the titration, How much dissolved oxalate (in M) was in the titration flask?
Which of the following would result in an increase in the calculated ngas 10, assuming the rest of the parameters are held constant? select one or more if applicable I. Performing the experiment in a different laboratory with a cooler temperature. II. A shorter equilibration time prior to volume measurement. III. Acid used was 12.0 M HNO3 instead of 6.0 M HCI.
H₂O + CO₂ -> H₂CO3 K₂ = 0.59 If one places 2.1 Moos of H₂D and 3.8 dies OF CO₂ INto 11 Flask, what concentraten OF H₂CO3 will exist At Equilibrism
Please don't provide handwritten solution ....
I need the answer as soon as possible
"Consider a crystallization of sulfanilamide in which 10 mL of hot 95% ethyl alcohol is added to 0.10 g of impure sulfanilamide. After the solid has dissolved, the solu-tion is cooled to room temperature and then placed in an ice-water bath. No crys-tals form, even after scratching with a glass rod. Explain why this crystallization failed. What would you have to do at this point to make the crystallization work? You should assume that starting over again with a new sample is not an option. (You may need to refer to Technique 11, Figure 11.2.)2.Benzyl alcohol (bp 205°C) was selected by a stu"
Please show complete work, to understand.
Precipitation of chloride in a sample of a weight of 0.272 g by adding 50 ml of 0.103 N silver nitrate. It is necessary to calibrate the excess amount of 8.65 silver nitrate with 0.126N potassium thiocyanate Calculate the percentage of chloride in the sample?
A chemist mixes 10.0 mg of Ca(NO3)2 to a 100.0 mL sample of 0.010 M Na2C2O4 at 25 oC. Assume the volume of solution does not change. Given that for CaC2O4, Ksp = 2.7 x 10-9 at 25 oC, determine a) the value of Qsp (number and magnitude) of CaC2O4 dissolution and b) whether a precipitate should form.
One published value for Keq for FeSCN2+ formation is approximately 113 at 20oC. Based on this value, does equilibrium favor the formation of FeSCN2+, or does it favor the reverse reaction? Briefly justify your answer.