09 Cyclohexene

Stoichiometry: Prolonged exposure of some functionalities to the eluent (methanol) in this experiment may lead to undesirable reactions. In one case, Acetylsalicylic acid (Aspirin) can react with methanol to form salicylic acid and methyl acetate. If 800 mg of Acetylsalicylic acid and 1 mL of Methanol undergoes such a side reaction (known as "Methanolysis") to completion: (a) write a balanced equation (draw all molecules instead of writing chemical formulas), (b) what is the limiting reagent? (c) predict the grams of salicylic acid and methyl acetate to be produced in this process. Show calculations. Hint: you can determine the grams of 1 mL of Methanol through its density.

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…

You are to prepare 100 mL of a solution of formaldehyde of such strength that 10 mL diluted to 1 litre will give a solution containing Formaldehyde 0.15 % w/v. What volume of Formalin BP will be required? (Formalin BP = 36% w/w Formaldehyde; density = 1.08 g/mL) Select one: a. 17.3 b. 38.6 c. 45.0 d. 48.6 e. 22.5

Give answer each question separate and give explanation too.

7. Don believes that fewer than one-third of the students at his college hold part-time jobs while in school. To investigate this, he randomly surveyed 116 students and found that 32 students held part-time jobs. a. ( - Provide a 90% confidence interval for the population proportion of students that hold a part-time job. b. 1 (a). ;Give the correct interpretation of the interval in part c. Extra Credit: Does this interval support Don's claim? Why?

An experiment is started with 6g of a 1:1:1 ratio mixture of benzoic acid, 2-naphthol, and hydroquinone dimethyl ether. The experiment is finished with 0.2 g of 2-naphthol. What is the percent recovery? 10% 50% 3% 16%

Color BEFORE adding Color AFTER adding Intensity of color AFTER adding FeCl3 Test Tube # FeCl3 FeCl3 #1 (salicylic acid) clear lilac 100% #2 (commercial aspirin A) clear slightly pink 50% #3 (commercial aspirin B) clear lilac 95% #4 (aspirin from your clear pink 20% synthesis above) #5 (control) clear clear 0% Based on this data and the melting point of Aspirin, how pure is the synthesized product?

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.

In Figure 7 above, the 3 columns represent 3 different samples. Which column(s) represent pure compound(s)?

NUMBER FOUR PLEASE, not three cause that was answered previously

Three alcohol bottles were mislabeled in the stockroom: 1-pentanol, 2-pentanol, and 3-pentanol. A clever student decided to using MS to determine the identity of the structures. Using the MS data, draw the structure of the compound found in each bottle. Bottle #1: Base peak with a m/z of 45 Bottle #2: Base peak with a m/z of 70 and two significant peaks with m/z of 42 and 31 Bottle #3: Base peak with a m/z of 59

What is the percentage yield of the reaction? Dehydration of 2-Methylcyclohexanol

Using the data collected in Table 1 fill in the blanks of Table 2

2. Fill in the table of reactants and solvents. Calculate molecular weights and mmol of each reactant. Compound mp or bp. °C Maleic Anhydride Anthracene Xylene MW mg 40 mg 80 mg 1 mL 3. Which reagent is limiting? 4. Calculate the theoretical yield in mmol and mg. Show your work. mmol

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…

Answer to c is 1.56g. Please answer bottom question and disregard book pages.

Consider the reaction below. What is the effect on the concentration of acetic acid (CH3CO2H), water (H20) hydronium ion (H30*), and acetate ion (CH3CO2) if H3o is added to the reaction? CH3CO2H (aq) + H20 (1) = H30* (aq) + CH3CO2 (aq) Ka=1.8x10-5 The concentration of CH3CO2H The concentration of H30* The concentration of CH3CO2¯ The concentration of H2 increases decreases does not change

Need to check my answer.

2-Methylcyclohexanol (5 mL, d=0.929g g/ml, MW= 114.19) was heated under reflux with 5mL of 85% phosphoric acid. What is the theoretical yield of the product for this reaction? a) 4.5 g     b) 3.9g    c) 3.2g    d) 2.9g    e) 2.5g

I need help with understanding these questions. These questions are not writing/researching responses.