Williamson Ether Synthesis lab. What is the limiting reagent?  I used 160 micro liters p-cresol. 260 microliters NaOH, 0.019g tetrabutylammonium bromide and 150 microliters 1-iodopropane

Extraction of Caffeine Post-lab 1. What group of organic compounds does caffeine belong to? 2. Draw the structure of caffeine as a line formula. Redraw the structure of caffeine,showing all carbon and hydrogen atoms. 3. What is the molecular formula for caffeine? Use the molecular formula of caffeine tocalculate its molecular weight. 4. What does it mean for two solvents to be immiscible? 5. On the report sheet, you calculated your percent recovery of caffeine. a. If your percent was less than 90%, give at least one reason why it was less. b. A group of students have their percent yield more than 100%, give at least one reasonwhy it was more than 100%. Do NOT simply say “human error.” Be specific about the typesof errors (human or otherwise) that may have occurred, leading to a recovery more than eorequal to 100% (Is this possible Why?)   6. Based on what you observed during this experiment, is dichloromethane denser OR lessdense than water? Explain your reasoning. 7. Based on what…

5. Each mixture below contains 1 mL solvent 1, 1 mL of solvent 2, and 40 mg of the solid. For each, indicate the species contained in each layer using the sketched test tube. Solvent 1 CH,CH,-O-CH,CH, H₂O Solvent 2 CH,CH,-O-CH,CH, H₂O CH₂Cl₂ CH₂Cl₂ H₂O IM HCI (aq) H₂C-N Solid NaCl CH3 H₂C HQ NH₂ Test tube D

Question 5

(extraction, reactive extraction, recrystallization). Write a few sentences for each technique explaining them

Prelab Questions: 1. Write the balanced equation for the bromination of 4-methylbenzoic acid. 2. Complete the following table for the bromination with the values from the procedure given: density, g/mL XXX XXX MW, mp/bp, °C mp, 179-181 mp, 175-180 (dec) mp, 105 bp, 132 equiv mmol compound 4-methylbenzoic acid NBS Benzoyl peroxide chlorobenzene g/mol mL XXX XXX XXX XXX XXX XXX XXX XXX 3. What is the theoretical yield for this reaction?

I want to explain what happened in this reaction

Select one for each box

You are given a pure unknown compound with a melting point of 118 – 120°C, which is either mandelic acid (lit. mp = 118 -120°C) or succinic anhydride (lit. mp = 119 – 120°C), along with pure samples of mandelic acid and  succinic anhydride.  You determine the mp of an approximately 50:50  mixture of the unknown sample and succinic anhydride to be 118-120° C.  What is the identity of the unknown sample? a. succinic anhydride b. mandelic acid

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?