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Ethanol from sucrose lab report

16/12/2020 Client: saad24vbs Deadline: 2 Day

How to approach a lab write up for EXP 18


Name


Date (of experiment)


Title of experiment: (as listed in manual/handout)


Purpose or Aim: This says exactly what the goal of the experiment is. It may consist of one or more parts. Based on what is stated in the procedure, you should have a very good idea as to what the point of the experiment is. Explicitly and briefly state all in this section. (3 points)


Examples: 1. To recrystallize an impure sample of benzoic acid; 2. To determine the melting point of salicylic acid


Introduction: This explains the theory behind the experiment. Give some general background as to what the experiment is about. Include definitions of any key concepts that are an important part of the experiment. (5 points)


This approach can be applied across all topics being covered.


Materials: List glassware, chemicals and equipment/instrumentation used in the experiment.


(5 points)


Procedure: Write a step by step procedure of the experiment as outlined in the video. (5points)


Results and calculations: Report results from experiment. Tables can be used, also show sample calculations. (20 points total)


Fermentation of Sucrose


Measuring Sucrose (3pts)


Mass of weight boat


Mass of weight boat +Sucrose


Mass of sucrose


Measuring yeast (3pts)


Mass of weight boat


Mass of weight boat + yeast


Mass of yeast


Fractional distillation (3pts)


Mass of empty vial


Mass of vial + distillate


Mass of distillate


Measuring Density of distillate at 25°C (3pts)


Mass of empty vial


Mass of empty vial and 1.000 mL of distillate


Mass of 1.000 mL of distillate


Density of distillate (2pts)


Percent ethanol by weight (2pts)


% Yield of ethanol = (mass of ethanol/theoretical yield) * 100 (4pts)


Discussion: Analyze the data you obtained in your experiment. Explain difference between the starting weight of the impure sulfanilamide and the pure sulfanilamide. (5 points)


Conclusion: (2 points)



Post lab calculations: (pg. 156)


Questions (1 and 6) (5 points)


For question 6, at room temperature and pressure (1 atm and 25 °C) one mole of a gas occupies 24 Liters.


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