Synthesis of Aspirin.edited

Table of chemicals and reagents with their physicochemical properties (name, molecular formula, molecular weight, pKa, melting point, boiling point, etc.) Write a short outline or a flow diagram of the procedure List and safety issues Read and understand the MSDS information for each chemical used in this practical Experimental procedure Please do not scratch the clear sides of the UV cuvettes as this will invalidate your results. Part 1: Preparation of a calibration curve A calibration curve should be constructed using at least five concentrations of the pure paracetamol standard supplied in the range 3-15 ug/mL as follows: Weigh about 150 mg of paracetamol accurately and transfer to a 200 mL volumetric flask. Add 50 mL of o.1 M NaOH and dilute to about 100 mL with deionised water (DI). Shake and make up to volume with DI water. Dilute 10 mL of the resulting solution to 100 mL (volumetric flask) with DI water (= stock solution). Prepare standard solutions containing 3, 6, 9, 12 and 15…

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(Please show any work so I can understand your answer, also you may need a special periodic table to solve the following question, I have attached the special periodic table in the images in casw you need it.)  Draw the product of the hydration of 3-methyl-2-pentene.

how many equivalents of 6M NaOH would you add (in other words, what molar ratio of 6M NaOH to triester do you need) so that the reaction runs as pictured?

Often, you are just trying to write the equations as one big equation.  It is easier to follow what is going on if we write them one at a time;CH3)3CCl + H2O --> (CH3)3COH + Cl- + H+this reaction produces tert butyl alcohol, which we can not measure directly. so we titrate the solution with NaOH, and the parts that react with the base is H+H+  + Cl-    +   NaOH  ->   H2O and Na+ and Cl- we can determine when we have reached the endpoint with the help of the indicator. since every mole of NaOH reacts with a mole of H+.  if we know the moles NaOH used we can find the moles of H+ created. In the first equation, we learn that every mole of tert butyl chloride produces 1 mole of H+ and 1 mole of tert butyl alcohol (our desired product). therefore moles NaOH = moles H+  = moles tert butyl alcohol. explain how you can calculate product concentration.

13-CH2-O+ nA- WATER SOLUB X bapps/assessment/review/review.jsp?attempt_id= 4910689_1&course_id=_69748_1&content_id= 3071. IVE Round your answer to the second decimal place. Selected Answer: 8.26 estion 8 In an aqueous solution at 25 °C, when the [OH"] > [H3O*] which ONE of the following is true? Selected Answer. The pH is less than 7 and the solution is acidic. Answers! The pH is greater than 7 and the solution is basic. The pH is greater than 7 and the solution is acidic. The pH is less than 7 and the solution is acidic. The pH is less than 7 and the solution is basic. Question 9 in a 11 ratio during a neutralization reaction?

The weedkiller propanil used in the rice fields is an amide. Write the analysis and synthesis this compound HN J

5. If the concentrated phosphoric acid (H3PO4) is 15.2 M, determine the molar ratio of H3PO4 to cyclohexanol, if one used 9.13 g of cyclohexanol and 4.0 mL of H3PO4. Show your calculations. Was cyclohexanol or H3PO4 the limiting reagent? Briefly explain.

Consider the reaction below. What is the effect on the concentration of acetic acid (CH3CO,H), hydronium ion, and acetate ion (CH3CO2-) if KCH3CO, is added to the reaction? CH3CO,H (aq) + H20 (1) = H30* (aq) + CH3CO2 (aq) K3=1.8x10-5 The concentration of CH3CO2H (ad v decreases The concentration of H20 increases does not change The concentration of H30* (aq) The concentration of CH3CO2 (aq)

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TITRIMETRIC DATA SAMPLE: CANE VINEGAR % acidity in label: 4.5% %purity of KHP: 99.80% FORMULA WEIGHT of KHP: 204.22 g/mol STANDARDIZATION OF NaOH SOLUTION TRIAL 1 TRIAL 2 TRIAL 3 Weight of KHP, g 0.1012 0.1004 0.09987 Initial volume of NaOH, mL 5.00 10.01 Final volume of NaOH, mL 4.95 9.99 14.93 Molarity of NaOH Average Molarity of NaOH ANALYSIS OF ACETIC ACID IN A VINEGAR SAMPLE TRIAL 1 TRIAL 2 TRIAL 3 Volume of vinegar, mL Initial volume of NaOH, mL 1.00 1.00 1.00 14.98 22.90 30.87 Final volume of NaOH, mL 22.84 30.77 38.75 Molarity of acetic acid Average molarity of acetic acid ANALYSIS OF CARBONIC ACID IN A SODA SAMPLE TRIAL 1 TRIAL 2 TRIAL 3 Volume of soda, mL 20.0 20.0 20.0 Initial volume of NaOH, mL 20.20 22.05 23.93 Final volume of NaOH, mL 22.03 23.89 25.8 Molarity of carbonic acid Average molarity of carbonic acid

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. What reaction occurs when sodium hydroxide is added to the stearic acid in cyclohexane and water?How does this change the solubility of cyclohexane in water? Does HCl reverse this reaction and if sowhy? Does sodium chloride have the same type of behavior as stearic acid or is it different? Explainwhy these two solutes are the same or different. (do not copy an answer from chegg, please)

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The following compounds are available as 0.10 M aqueous solutions: pyridine triethylamine m-nitroaniline NaOH phenol HCIO HCIO4 (рКь = 8.82) (pKb = 3.25) (pKb = 11.53) (K₂ = 1.1 × 10-10) (K₂ = 2.9 × 10-8) Which two solutions could be combined to prepare a pH 6.7 buffer? HCIO and NaOH phenol and NaOH m-nitroaniline and HCIO4 pyridine and HCIO4

What is the concentration of hydrochloric acid? Find the concentration using the information given below.  Equipment used in the lab:   50 mL burette   X M H2SO4 solution (aq) • Two 50 mL beakers   0.10 M NaOH (aq)   Procedure:   25 mL volumetric pipette  • Bromothymol blue indicator  • Pipette pump   • 250 mL Erlenmeyer flask   Observations from the Titration Lab.   Trial 1  Trial 2  Trial 3 Final burette reading 14.6 mL 27.85 mL 40 mL Initial burette reading 0 mL 14.5 mL 27.85 mL Volume of H2SO4 (aq) added 25 mL 14.6mL 13.35 mL 12.15 mL

Phenol is a functional group that is readily ionized by adjusting the pH of the aqueous solution during an extraction. What is the neutral and ionized form? How do you convert the neutral to the ionized form?

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Question 5

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search Problem 10.32 - Enhanced - with Feedback 827 6354 You may want to reference (Pages 338-340) Section 10.5 while completing this problem Calculate the [OH value of each aqueous solution. Part A oven cleaner, with [H3O+] = 1.0 × 10-¹2 M Express your answer using two significant figures. IVD] ΑΣΦ Submit Part B Request Answer C Ć -9 milk of magnesia with [H3O+] = 1.0 × 10 M Express your answer using two significant figures. VE ΑΣΦ → C stane ? ? Copyright © 2023 Pearson Education Inc. All righ KER hp

2. Determining the Acid Content of Vinegar Trials A В C Volume of Vinegar used (ml) 25.00 diluted to 250.00 mL Volume of Aliquot used (ml) 50.00 50.00 50.00 Final Volume Reading NaOH (ml) 36.25 35.10 36.94 Initial Volume Reading NaOH (ml) 0.00 0.10 0.20 Net Volume NAOH used (ml) Calculation of % (w/v) CH3COOH via dimensional analysis Trial A Trial B Trial C Calculation of Average percent (w/v) CH;COOH

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.

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