Tools Chem 08LB Lab... x 108% for a teaching lab, so you will use a hydrogen \"s
ID: 570826 • Letter: T
Question
Tools Chem 08LB Lab... x 108% for a teaching lab, so you will use a hydrogen "surrogate" - ammonium formate. A hydrogenation that uses something other than molecular hydrogen is called a transfer hydrogenation. You will reduce ethyl cinnamate using a transfer hydrogenation process, and analyze the reaction with IR spectroscopy and thin layer chromatography 0 Pdc catalyst Ethyl Cinnamate Ethyl 3-pheny lpropanoate Prelab Questions 1) The Material Safety Data Sheets (MSDS) for all the chemicals involved in this lab are on iLearn. Read these and answer the following questions a) Which chemical is the most dangerous in this lab? b) Explain why you chose your answer for part a), and the safety precautions you will take when handling this material. 2) Fill in the reaction table below. Make sure you correctly calculate the molar amounts of your reactive materials name formula mol.-eq. Mw mmol Ethyl Cinnamate Ammonium formate 10% Palladium on carbon Ethanol product Tamount 168 472 mg 42 mg 16 mL 1.00 3) Based on your answers to Q2, which is the limiting reagent in this reaction? 4) Calculate the Theoretical Yield of your product, i.e. the mass you would expect to recover, assuming 100% conversion to product. 2 3 4 9Explanation / Answer
a. ammonium formate is the most dangerous.
b.Very hazardous in case of skin contact (irritant), of eye contact (irritant), of ingestion, of inhalation. Inflammation of the eye is characterized by redness, watering, and itching. Skin inflammation is characterized by itching, scaling, reddening, or, occasionally, blistering.
precautions: Keep away from heat. Keep away from sources of ignition. Empty containers pose a fire risk, evaporate the residue under a fume hood. Ground all equipment containing material. Do not ingest. Do not breathe dust. In case of insufficient ventilation, wear suitable respiratory equipment. If ingested, seek medical advice immediately and show the container or the label. Avoid contact with skin and eyes.
2. formula mol-eq mw m mol ammount
ethyl cinnamate C11H12O2 1 176.21 g/mol 1
ammonium formate NH4HCO2 7.8 63.0559 g/mol 7.485
ethanol C2H6O 0.27 46.07 g/mol 0.27
product C11H14O2 178.228
3. ethyl cinnamate is the limiting reagent