1. Use an Aldrich catalog to complete the following table: M.W Hazards Acetone E
ID: 562722 • Letter: 1
Question
1. Use an Aldrich catalog to complete the following table: M.W Hazards Acetone Ethanol Where should the thermometer bulb be placed in order to measure the temperature of the hot vapor accurately during distillation? 4. What is the purpose of the "packing" in a fractional distillation column? 5. why should a distillation flask never be more than ¾ full before starting a distillation? 6. You are fractionally distilling 75 mL of a 50:50 solution of cyclohexane and toluene. After 2 mL has distilled you collect a sample for analysis. It is determined that your sample contains a mixture that is 85:15 cyclohexane/toluene. Calculate the total number of theoretical plates if the relative volatility () of the original solution is 2.41.Explanation / Answer
Ans 1 :
Acetone is CH3COCH3 . It is a ketone and its IUPAC name is 2-propanone.
Its M.W. (molecular weight) is 58.08 g/mol
Its bp (boiling point) is 56oC
Hazards : Dermatitis , eye and lung irritation etc
Ethanol is CH3CH2Oh. It is an alcohol
Its M.W is 46.07 g/mol
Its bp is 78.37oC
Hazards : eye and skin irritation , dizziness , headache etc
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