Hey everybody, I just completed a small distillation lab for my high school chemistry class. We took a sucrose/water solution, added yeast to ferment it, and distilled it into ethanol for about an hour in the lab. I'm trying to write my lab report, and I've hit a huge stumbling block! One of the questions asks to determine the theoretical yield using the balanced equation we had to come up with, but it also says keep in mind that only 12% of the sucrose will be converted to ethanol Does this 12% factor into anything! Heres my work: C12H22O11 -> 4C2H5OH + 4CO2 We used 49.36 g of sucrose in the original solution FYI (49.36 g) * (1 mol sucrose/342.34g) * (4 mol ethanol / 1 mol sucrose) * (46.08 g / 1 mol ethanol) -> 26.99 g ethanol Do I do anything with that 12% or is that my theoretical yield right there!?