Create a separation scheme to separate 50% ethyl 4-aminobenzoate, 40% 1,2,4,5- tetrachlorobenzene, and 10% 1,4-dibromobenzene from a 1g mixture. The solutions available are water, 1.0 M NaOH, 6.0 M NaOH, 1.0 M HCI, 6.0 M HCI, 1M NaHCO3, saturated aqueous sodium chloride, dichloromethane, ethyl acetate, 95% ethanol, methanol, isopropyl alcohol, acetone, hexane, and toluene. Column chromatography and distillation are unavailable. I understand that the first step would be an acid base extraction to separate the ethyl 4- aminobenzoate from the rest of the compounds, but how would I separate the 1,2,4,5- tetrachlorobenzene from the 1,4-dibromobenzene?

O 1,4-dimethylbenzene O 1,3-dimethylbenzene 250 ml volume of a mixture of 0.8g of NaHCO3 and 0.2g of NaOH in 3 points water. Take 50 ml of this mixture and titrate with o.1 N of HCI. Calculate the volume of acid? ( Atomic weight = Na=23, H=1,O =16, CI =35 , C=12, N= 14) * 30 ml. 5 ml. O 25 ml. 10 ml. O 45 ml.

Approximately 6 mL of concentrated perchloric acid (72%) was transferred to a bottle and diluted with about 1.0L of water. A sample containing 250.0 mg of primary standard sodium tetraborate (NazB407 .10H2O, FW= 381.42 g/mol) was dissolved in 50.00 mL water and required 27.25 mL of the HCIO4 solution to reach the methyl red end point. A 25.00 mL solution of an unknown NH3 sample required 13.24 mL of the HCIO4 solution. Calculate the molarity of the NH3.

A student dissolved 4 drops of an unknown compound in 1 mL of methylene chloride (dichloromethane) in a test tube. They added 5 drops of a 2% solution of bromine in dichloromethane dropwise and mixed the contents within the test tube gently. They observed the red-brown color discharges (turns colorless) until the last drop. What compound is most likely the unknown? ©GMU 2020 Oa. Methanol b. Cyclohexane c. n-Butyl Bromide O d. Hex-2-ene COLE QUESTION 6 A student placed 2 drops of an unknown sample in a test tube and added 2 mL of ethanol to the test tube while mixing gently. They added 2 drops of potassium permanganate reagent to the test tube and mixed the contents of the test tube gently. The initial color was a deep purple but then changed to a yellow color which precipitates as a brown solid. What compound is most likely the unknown? OGMU 2020 a. Cyclopentane O b. Cyclohexene c. 1-Pentyl Chloride d. 2-Propanol SOUL QUESTION 7 A student performed the Beilstein test within a chemical…

A student prepared 2-butanone (C4H&O) in the lab. To determine the purity of the product, the ketone was reacted with excess hydroxylamine hydrochloride liberating HCI. In this study, as much as 3.00 ml of sample was diluted to 50 mL and was treated with an excess of hydroxylamine hydrochloride. The liberated HCI was then titrated with 0.9989 M NaOH, requiring 32.68 mL to reach the end point. 1. Show how 2-butanone can be prepared! 2. Determine the percent purity of the sample, given that the density of 2-butanone is 0.805 g/mL!

When the 2.5M NaOH (15mL) solution is added to the solution of 50:50 mixture of benzophenone and benzocaine acid (2.001g) , in diethyl ether (30 mL), a reaction takes place between NaOH and one of the components in the mixture. Draw a scheme that shows that reaction. Include electron-push arrows

Complete the flow chart below to describe the separation of an acid and base mixture by providing the necessary chemical structures.

Complete the reaction scheme shown below

Based from the given problem, What is the molecular weight and meq of potassium biphthalate (C8H5KO4)?

Standard solution : 0.201 grams of acetylsalicylic acid was combined with 10 mL of 0.5 M NaOH, then transfered to a 100 mL flask and filled the rest of the way with water Then 0.500 mLs of the standard solution was transfered to a 10.00 mL flask and diluted to the 10 mL mark with 0.02 M of buffered iron chloride.  Number of moles of NaOH = 0.005 moles Since the reaction between acetylsalicylic acid and NaOH is a 1:1 reaction, the number of moles of acetylsalicylic acid used in the reaction is also 0.005 moles. the concentration from analysis question 5: acetylsalicylic acid in the 100.00 mL volumetric flask is 0.050 M. From your plot, what is the value of εb? From the Beer- Lambert law For the aspirin sample, calculate the concentration of acetylsalicylic acid present using the value of εb that you found   The concentration from analysis question 5 represents the concentration in the 10.00 mL sample that was prepared in the volumetric flask using an aliquot of the solution in the…