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Answer in General Chemistry for Danyal #153471

Author:
March 17th, 2023

Calculate the percentage yield of ethanol when 100 g of glucose is fermented to make 20 g of ethanol.

the normal reaction of glucose fermentation to ethanol is

“C_6H_{12}O_{6(aq)}to 2C_2H_5OH_{(aq)} +2CO_{2(g)}”

from the reaction above,

1 mole of glucose ferments to form 2 moles of ethanol

This means that, 180g of glucose ferments to form 92g (2×46) of ethanol

100g of glucose should therefore ferment to form 51.1g (“dfrac{100u00d792}{180}”) of ethanol

from, “% yield = dfrac{textsf{Actual Yield}}{textsf{Theoretical Yield}} u00d7 100%”

“%yield = dfrac{20g}{51.1g} u00d7 100% = 39.14”%

This means that the percentage yield of ethanol when 100 g of glucose is fermented is 39.14%

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