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27 Nov 2019

I am so confused. I need to have the % volume of ethanol from my fractional distillation sample and the % weight ethanol and I ave no idea how to do that. I did the experiment and calculated Fractions at 80 degrees, 85 and 98. My data is this:2 mL collected for #1 or (0.574 g) because I weighed the flask and divided by 2 mL4 mL collected...same process (0.4795 g)7 mL collected ....sam process(0.6566 g)That is all I have for fractional distillation. How would I calculate the % volume of ethanol and the % weight of ethanol from that data? I did the simple distillation already and got 0.8614 g/mL for the density.I am so confused please help

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Related questions

In the fractional distillation procedure for the experiment of ethanol synthesis, you are directed to collect 3 fractions: distillate collected from 77-80 C, distillate collected from 80-96 C and distillate collected above 96 C. Which fraction should contain the highest % volume of ethanol? What is the probable composition of the fraction which boiled above 96 C?

1. In this distillation experiment we start the experiment with 10 mL of liquid mixture ofcyclohexane and toluene. However, it is not possible to obtain all 10 mL back under thecurrent procedure particularly for fractional distillation. Explain why that is the case for distillation and in particular for fractional distillation.

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This is a lab report for my organic chemistry lab about Distillation of ethanol. This is what we got in lab:

Density of filtered fermentation broth: 0.782 g/mL

Volume of ethanol before beginning the distillation: 100mL

For volume:

Fraction I(ethanol):

4.5 mL

Fraction II(water):

2mL

The temperature range:

For Fraction I: 70C-80C and for Fraction II: 90C-100C

Ethanol boils at 78 C

150mL= 42.54 g (Beaker weight)

600mL= 182.76 g

600mL+ ethanol broth= 365.49

200mL broth before Distillation:

100mL of broth=7.82 g

Calculations:

Density= mass/volume

7.82 g / 10 Ml= 0.782 g/mL

0.782 g/cm^3

Density of filtered fermentation broth: 182.73 / 200= 0.913 g/mL

Volume of ethanol / water solution before beginning distillation: 100mL

Volume of residue remaining in the bottom flask: 2.7 g

87 mL left of distillation product

NOW, I NEED TO FIND THEORETICAL YIELD AND PERCENT YIELD OF ETHANOL RECOVERED FROM DISTILLATION. PLEASE HELP ME

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