delete insert prf sc home f9 end f10 f12 Pgdn f11Pgup f7 num k backspace & 8. 6. 6. 7. 8. [ 1 pg home The minimum volune water is used to dissolwe 1.S9 acetanilide. of 1.5g Golution cooted dowrn to room temperatue and The hot acetanilide recrystalwes. Solubility of acetari lide at Loot is Sa/L00ML and room temperatue 0.54g /OomL. precipitates. lWhat is the mass of acetanilide when it ele .. .. +.

delete insert prf sc home f9 end f10 f12 Pgdn f11Pgup f7 num k backspace & 8. 6. 6. 7. 8. [ 1 pg home The minimum volune water is used to dissolwe 1.S9 acetanilide. of 1.5g Golution cooted dowrn to room temperatue and The hot acetanilide recrystalwes. Solubility of acetari lide at Loot is Sa/L00ML and room temperatue 0.54g /OomL. precipitates. lWhat is the mass of acetanilide when it ele .. .. +.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.26QAP

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Part b As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively. A sparingly soluble salt, Herbigon is dissolved in 1 M acetic acid for technical reasons having to do with its production. You have determined that the solubility product Ksp of Herbigon is 9.00×10-6 Although the formula of this new chemical is a trade secret, it can be revealed that the formula for Herbigon is X-acetate (XCH COO, where "X" represents the top-secret cation of the salt). It is this cation that kills weeds. Since it is critical to have Herbigon dissolved (it won't kill weeds as a suspension), you are working on adjusting the pH so Herbigon will be soluble at the concentration needed to kill weeds. What pH must the solution have to yield a solution in which the concentration of X* is 4.00×10-3 M? The pKa of acetic acid is 4.76.
Hexanoic acid was added to an immiscible biphasic solvent sysem, water and CCl4 at 20.0OC and the equilibrium concentrations of hexanoic acid were determined to be 3.66 g/L in H2O and 67.0 g/L in CCl4. Caluclate the distrubution coeffiecent (D1) of hexanoic acid in CCl4 with respect to water.
a) Succinimide is an organic compound used in many syntheses as a building block and is related to a class of drugs known as anticonvulsants. Given the following solubility of succinimide in water and methanol, which would be a better solvent for recrystallizing succinimide? Solubility data: 1 gram of succinimide is soluble in 5 mL of cold water, 3 mL of water at room temperature and 0.7 mL of boiling water. 1 gram of succinimide is soluble in 30 mL of cold methanol, 24 mL of room temperature methanol and 5 mL of hot methanol. Show calculations.b) A researcher wanted to purify 0.4 grams of crude succinimide via recrystallization using only 2 mL of solvent. Decide the best solvent to use (water or methanol) to show the maximum % recovery of the researcher. The best solvent chosen here, may differ from the one chosen in part a.
It is known that acid content has a major effect on theflavor of vinegars, but most cheaper vinegars are diluted similarly to 5% acidity Wt./vol. % is equivalent to gsolute per 100mL solution (so 5% is equivalent to 5 g acid/100 mL solution). a.) First, calculate the approximate molar concentration of acetic acid in the 5% wt./vol vinegar. b.) Next, calculate the expected molarity of acetic acid in the solution upon dilution by a factor of 5. Thank you!
What is the Ksp expression for PbCl2 in water? Group of answer choices Ksp = [Pb2+][Cl–]2 Ksp = [Pb2+][Cl–] Ksp = [??2+][??−]2[????2][Pb2+][Cl−]2[PbCl2] Ksp = [??2+][??−][????2][?2?][Pb2+][Cl−][PbCl2][H2O]
1) For an open system with PCO2=10−3.5 atm what fraction of the total carbonate is in the form of CO32− at pH 10.63? 2) Using paleolimnological methods it is possible to estimate past pH values of surface waters. If the estimate of pH is 5.787 , what is the corresponding PCO2? in atm.
Can you help me determine the required amount of 500mg ascorbic acid tablets to puverize the necessary amount of distilled water to make the desired concentration of stock solution (0.1M) Show complete and justifiable computations pls.
MnSO4•H2O is soluble in water at 25°C, with a solubility of 70.0 g per 1000 g of solution. A saturated solution of MnSO4•H2O has a density of 1.02 g mL-1. When MnSO4•H2O dissolves in water, it absorbs roughly 3.05 kJ/mol of energy. MnSO4•H2O = 169.03 g/mol; H2O = 18.02 g/mol; MW: MnSO4•H2O = 169.03 g/mol. Which of the following is TRUE about a 0.32 M solution of MnSO4•H2O in water? a. A 0.32 M solution contains 70.0 g MnSO4•H2O b. A 0.32 M solution of MnSO4•H2O is unsaturated c. A 0.32 M solution of MnSO4•H2O is supersaturated d. A 0.32 M solution of MnSO4•H2O is saturated
MnSO4•H2O is soluble in water at 25°C, with a solubility of 70.0 g per 1000 g of solution. A saturated solution of MnSO4•H2O has a density of 1.02 g mL-1. When MnSO4•H2O dissolves in water, it absorbs roughly 3.05 kJ/mol of energy. MnSO4•H2O = 169.03 g/mol; H2O = 18.02 g/mol; MW: MnSO4•H2O = 169.03 g/mol. What is the mole fraction of MnSO4•H2O in its saturated solution?
Suppose i manufactured 3 litters of Acid free shampoo for bike or car washing. Now for coloring shampoo ,which coloring agents or pigments or dyes i should use for my formulation? The dyes or pigments or coloring agent should be water soluble. And please mention what percentage i should use to my 3 litters formulation? Please answer at your own words. Answer should be to the point.
Over time, as their free fatty acid (FFA) content increases,edible fats and oils become rancid. To measure rancidity, the fator oil is dissolved in ethanol, and any FFA present is titrated withKOH dissolved in ethanol. In a series of tests on olive oil, a stocksolution of 0.050 Methanolic KOH was prepared at 25C, storedat 0C, and then placed in a 100-mL buret to titrate any oleic acid[CH₃(CH₂)₇CH=CH(CH₂)₇COOH] present in the oil. Each offour 10.00-g samples of oil took several minutes to titrate: thefirst required 19.60 mL, the second 19.80 mL, and the third and fourth 20.00 mL of the ethanolic KOH.(a) What is the apparent acidity of each sample, in terms of mass% of oleic acid? (Note:As the ethanolic KOH warms in the bu-ret, its volume increases by a factor of 0.00104/C.)(b) Is the variation in acidity a random or systematic error? Ex-plain.(c) What is the actual acidity? How would you demonstrate this?
One litre of a saturated aqueous solution of Ag2SO4 (MW = 311.79 g mol- 1) at 25 °C is evaporated to dryness. 4.844 g of Ag2SO4 residue was produced. What is the solubility product (Ksp)?