Chemistry Homework Solutions
Problem
#8387

limiting reagent, theoretical yield, finding physical data

Please see the attachment for reaction/experiment data. How do I find the limiting reagent and the theoretical yield if, in the synthesis of ethanol by fermentation of sucrose, I do the following:
1.Place 40 grams of sucrose in a 500-mL round-bottomed flask.
2.Add 200 mL of water and 3.0 grams of dry yeast. Stir until sugar dissolves and no yeast granules remain.
3.Add 35 mL Pastuer's salt solution and stir to mix.
4.Close the flask with a one-hole stopper fitted with a piece of bent glass tubing.
5.Fill an 18 x 150 mm test tube halfway with saturated aqueous calcium hydroxide (limewater) and submerge the other end of the glass tubing about 1 cm below the surface of the solution.
6.Store the mixture at room temperature for 1 week to allow complete fermentation. Bubbling ceases when the reaction is complete.

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