I need to come up with a a separation and purification scheme procedure for 50% benzoic...

I need to come up with a a separation and purification scheme procedure for 50% benzoic acid, 40% benzoin, and 1,4-dibromobenzene having the following reagents available: 1M NaOH, 6M NaOH, 1M HCl, 6M HCl, 1M NaHCO3, saturated sodium chloride, diethyl ether, 95% ethanol, methanol, isopropyl alcohol, acetone, hexane, toluene, methylene chloride, and granular anhydrous sulfate

Expert Solution

Separation of Benzoic acid, Benzoin and 1,4-Dibromobenzene:

This mixture is dissolved in Diethyl ether solvent.

1) Benzoic acid

a) Separation: Given mixture treated with 1M NaHCO3 – a weak base. Benzoic acid get converted into the corresponding Sodium salt of Benzoic acid and get solvated in water. Benzoin – an alcohol and 1,4-Dibromobenzene – a neutral compound are not affected by this weak base 1M NaHCO3. Then with separatory funnel an aqueous phase containing salt of benzoic acid can be separated. Then the filtrate is treated with 1M HCl which regenerates benzoic acid back. The precipitated benzoic acid is filtered and filtrate again treated with 1M HCl to ensure complete removal of benzoic acid.

b) Purification: Benzoic acid thus obtained is dried under normal conditions and then recrystallization from 95 % ethanol or water gives purified benzoic acid.

2)Benzoin and 1,4-Dibromobenzene.

a) Separation can be done by solvent extraction method using Dichloromethane (DCM) i.e. Methylene chloride. Benzoin being more polar get into the DCM layer and 1,4-Dibromobenzene remains in Diethyl ether.

Extraction is repeated for 3-4 time to ensure complete removal of Benzoin.

Recrystalization of Benzoin: Recrystalized from hot methanol (Methylated spirit can be used). Benzoin is a pale yellow solid.

Recrystalization of 1,4-Dibromobenzene : can be recrystallized from toluene.

===================================================

queen_honey_blossom answered 1 year ago

I need to come up with a separation and purification scheme procedure of a mixture containing...

I need to come up with a separation and purification scheme procedure of a mixture containing 45% 4-aminoacetophenone, 45% 1,2,4,5-tetrachlorobenzene, and 10% 1,4-dibromobenzene. How would I go about this? Please explain step by step. We also need recrystallization. Addition Information ( The mixture will contain 45% of the neutral compound, 45% of acidic/basic compound, and 10% of neutral impurity (1,4-dibromobenzene). The goal is to isolate the neutral compound (which is present in your mixture up to 45%) and the acidic/basic...

lab report for separation and purification of benzoic acid, benzoin, 1,4-dibromobenzene

Need to read the article from the link I provided and need to come up with...

Need to read the article from the link I provided and need to come up with a 2-3 page summary and critique and providing real life examples. https://motherboard.vice.com/en_us/article/qkv5a3/apocalypse-neuro-why-our-brain-cant-process-the-planets-gravest-threats or https://www.islamicboard.com/general/134342488-apocalypse-neuro-brains-dont-process-gravest-threats-humanity.html

I need to come up with a study case following these steps!! Ethical decision-making is a...

I need to come up with a study case following these steps!! Ethical decision-making is a process that allows individuals to recognize ethical problems and analyze them fully The common basic steps to resolve ethical dilemmas in business are as follows: 1-Identify relevant facts (situation) 2- Identify relevant issue(s) (problem or area of concern) 3- Identify primary stakeholders (affected stakeholders) 4- Identify possible solutions (list all possible solutions to solve the issue) 5- Evaluate each possible solution (test and evaluate...

You’ll need to come up with programs for the substantive audit procedures for each of the...

You’ll need to come up with programs for the substantive audit procedures for each of the functional balance sheet areas (indicated with an asterisk (*) below). B series* Cash Substantive Audit Documentation C series* Accounts Receivable Substantive Audit Documentation D series* Inventory Substantive Audit Documentation E series* Prepaids Substantive Audit Documentation F series* Property, Plant and Equipment Substantive Audit Documentation I series* Other Assets Substantive Audit Documentation L series* Current Liabilities Substantive Audit Documentation N series* Notes Payable Substantive Audit...

I am doing a separation scheme of 4-chloro-3,4-dimethylnonane-1-amine and 4-hodroxy-3-methoxybenzaldehyde (which I think is vanillin). I...

I am doing a separation scheme of 4-chloro-3,4-dimethylnonane-1-amine and 4-hodroxy-3-methoxybenzaldehyde (which I think is vanillin). I believe both are starting as a solid. The first molecule and vanillin should be soluble in diethyl ether, while vanillin is soluble in water as well (but the first molecule is not). Would I just need to add water and use gravity filtration, then make the vanillin solid again? I've thought about dissolving both in ether then adding HCl to change the solubility of...

I need to find the theoretical yield of benzoic acid from this lab experiment. The first...

I need to find the theoretical yield of benzoic acid from this lab experiment. The first part of the experiment involved this formula C6H5COOH + NaOH ------> C6H5COO-Na+ + H2O where we mixed 30 mL of a stock solution of toluene-benzoic acid mixture and then added 15.0 mL of aqueous sodium hydroxide to seperate the two layers. In the second part, C6H5COO-Na + Hcl-------> C6H5COOH + NaCl we took the aqueous layer extracted from the mixture in the first part...

I need to know the procedures of the experiment below : Separation of a Three-Component Mixture...

I need to know the procedures of the experiment below : Separation of a Three-Component Mixture by Extraction benzoic acid ethyl 4-hydroxybenzoate diphenyl sulfone A 1.5-gram sample of a 1:1:1 (by weight) mixture of benzoic acid, ethyl 4-hydroxybenzoate and diphenyl sulfone was added to a 125 mL separatory funnel. Isopropyl acetate (20 mL) was added to the separatory funnel and the mixture swirled until all solids had dissolved. The solution was sequentially extracted with saturated aqueous NaHCO3 solution (4...

Come up with an example that would affect either C, I or NX that is not...

Come up with an example that would affect either C, I or NX that is not caused by a change in domestic price level changing. Based upon your example, how would it shift the AD demand curve? How would your example affect inflation and output of the overall economy in the short run?

To get the Frank's hot dog cart off the ground, we need to come up with...

To get the Frank's hot dog cart off the ground, we need to come up with a list of assets he will need. In your initial post, name and describe a single item. Why does Frank need this item to run his hot dog stand business? (Note: Please name only one item. You will have the opportunity to suggest additional items in your response posts.) After completing your initial post, respond to at least two other classmates. In each response,...

Question