Ethanol: A Piece of cake

Observations continued

Distillation Observations

 

Cake:

The solution boiled (slowly) and started emitting vapors. These vapors travelled through the distillation flask and cooled into a liquid. This liquid passed through the tube into the small flask. The vapors coming off of the boiling solution had a very strong pungent smell. The solution continued to boil and a lot of liquid was produced. More than 50 mL of what is hoped to be ethanol was produced. It did not smell very strong during the distillation process and after wards the flask containing the distilled solution smelled very faintly.

 

Acid Hydrolysis:

Solution began to boil very quickly and started to emit vapors. The vapors travelled through the distillation flask and cooled into a liquid. This liquid passed through the flask and into the flask at the end. The smell of this was very strong both throughout the distillation process and afterwards, when the process was finished. A very small amount of what is hoped to be ethanol was produced (20 mL). The vapor that was  collected was at 80 degrees and the boiling solution was at 90 degrees

Table 3: Observations for Ethanol Test

Ethanol	#1 Instant dry yeast	#2 Instant yeast	#1 Active dry yeast	#2 Active dry yeast	#1 Acid Hydrolysis	#2 Acid Hydrolysis
-20 drops of alcohol -50 drops of iodine -20 drops of NaOH	-20 drops of  Instant yeast -50 drops of Iodine -20 drops of NaOH	-20 drops of  Instant yeast -50 drops of Iodine -20 drops of NaOH	-20 drops of  Active dry -50 drops of Iodine -20 drops of NaOH	-20 drops of  Active dry -50 drops of Iodine -20 drops of NaOH	-20 drops of filtrate -50 drops Iodine -20 drops of NaOH	-20 drops of filtrate -50 drops Iodine -20 drops of NaOH
Iodine colour faded	Iodine colour faded	Iodine colour faded	Iodine colour faded	Iodine slightly faded colour	Iodine colour slightly faded	Iodine colour completely faded
Substance turned cloudy	Solution turned dark cloudy	Liquid turns cloudy	Solution turned cloudy	Substance turned dark yellow cloudy	Solution was a faded yellow colour	Solution remained clear
Yellow precipitate formed	Dark yellow precipitate fades to yellow precipitate	Dark yellow precipitate is formed and fades to light yellow precipitate	Yellow precipitate formed	Dark yellow precipitate formed faded to light yellow -Remained cloudy	After settling, the colour remained faded yellow, no precipitate formed	After settling, remained clear, no precipitate formed

Ethanol