recrystallization - discussion_questions_v4

Hydrochloric acid is usually purchased in a concentratedform that is 37.0% HCI by mass and has a density of 1.20 g/mL

Pertinent General Reactions.  Bayer’s oxidation:             Chomic acid oxidation: Lucas test: Ferric Chloride Test:

Hi, can somebody help me please to answer this question.   Write a detailed procedure on how to recrystallize benzoic acid contaminated with both a little salt and a sand from water. Thank you!

Hw.16.

H 1    please help me with these problems, i will rate thank you.

Let's imagine that in a drug design project a problem is encountered with the low water solubility of a lead compound. The compound has the low melting point of 41-43°C, and a log P value of 4.95. The compound does not possess any ionizable basic or acidic functional groups. Suggest two kinds of modification that the design team could introduce to increase the water solubility of the lead compound. Modification 1: Modification 2:

please give me step-by-step solution and circle answer please

None

Benzoic acid and water were added to the test tube labeled "b.a." After stirring the mixture, sodium hydroxide (NaOH) vas added until the solid disappeared. Finally, hydrochloric acid was added drop by drop until blue litmus paper turned red. The solid present in the test tube after the addition of HCI is most likely: benzoic acid benzyl acetate O benzyl chloride sodium benzoate

Select all that apply. If dichloromethane (CH2CI2), benzylamine, benzoic acid, and excess aqueous NaOH are mixed in a separatory funnel, what constituent(s) will primarily be in the aqueous phase? Select all that apply.©GML 2020 1. None of these O 2. Sodium benzoate 3. Benzoic acid 4. Benzylamine 5. CH2CI2 O 6. Sodium benzylamine O 7. Sodium hydoxide

Pls help ASAP ON ALL ASKED QUESTIONS PLS PLS

i found this question is really hard for me to answer, especially to explain the behaviour change in solubility.. thank you for helping me

Hi, I need help creating a line graph in excel for trial 1 only. I need to find the average reaction rates for trial 1 for temperature, pH, and concentration. Picture of excel graph would be appreciated, thank you.

Hello, I do not understand this quiestion or how to do this problem. Can you help me so I can follow along.   7. 5.00 mL of stock solution is diluted to 25.00 mL, peoducing solution ALPHA. 10.00 mL of solution ALPHA is diluted to 25.00 mL resulting in solutin BETA. 10.00 mL of solutionBETA is then diluted 25.00 mL producing solution Gamma.   a. Determine the dilution factor in produciing solution Alpha from the stock solution. b.  Determine the dilution factor in producing solution Beta from the solution Alpha    c. Determie the dilution factor in producing solution Gamma from the stock solution Beta.   d. Determine the overall serial dilution factor in producing solution Gamma form the stock solution.

a. Refer to the solubility curve below. Which compound below is the least soluble at 10°C?(refer to the photo attached) b. Which among the compounds in the figure below has the greatest increase of solubility as temperature increases from 0 to 30 ⁰C? (refer to the photo attached) c. Which of the following compounds below exhibits an exothermic reaction upon dissolution?(refer to the photo attached)

Extraction of Caffeine Post-lab   9. A 12 oz can of Coke contains 46 mg of caffeine. One fluid ounce is equivalent to 29.57 mL(1 oz = 29.57 mL). What is the concentration of caffeine in Coke, in units of mg/mL? Showyour work. 10. What is an alkaloid?   11. Why is anhydrous sodium carbonate used in isolation of Caffeine? What do youthink would happen if we used it during our simulation?

I need help finding the molarity of NaOH for run 2-4. I know the molarity for run one was 0.300M and that I have to use the M1V1=M2V2 formula but I don't know how to solve for it. I included the procedures we followed to make each dilution solution.

fill in the table with the appropriate information

Help me please

Understanding of food analysis methods.  Principles of method described compared to other techniques.   1 The MOHR Titration, AOAC Method? What is it and how does it work? How can it be used to quantify salt in a sample. 2 Are there any advantages and/or disadvantages of this method?3 Are there any alternate methods better than the Mohr Titration toquantitatively determine salt in a sample? 4. Diseases with recent statistics? Refer to World Health Organisation? 5. Why analayse salt? 6. Consumption? 7.  Main aims of study?

Organic Qualitative Analysis Unknown Compound Results and Identification: Trace the route on the flow chart below using different colors for the 3 different unknowns. Also, fill in the blanks on the flow chart with the color of the products. All functional Groups Insoluble Soluble Solubility Test pH test Beilstein Test Negative Acidic Neutral Basic Positive Alkyl Halide Amine Baeyer Test Color: Feas Test Ceric Nitrate Negative Positive Test Negative Carboxylic Acid Positive Alkane Alkene Phenol Positive Color: Color: Color: Negative Alcohol Color: Color: Baeyer Test Negative Ketone Positive Aldehyde Color: Color:

10. Fractional Distillation: This lab was viewed via a video and described in detail in lab class. You are distilling apart hexane (bp = 68) and toluene (bp 110). Your boiling point for the first fraction is 48°C. Why is the boiling point so low (most likely reason)? !! azeotrope with water non-resonance of hexane O resonance of toluene student error O seriously impaired thermometer

help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working

SEE THE TABLE IN IMAGES   Pertinent General Reactions.  Bayer’s oxidation:             Chomic acid oxidation: Lucas test: Ferric Chloride Test: