A quantity of $90\,\text{g}$ of glucose is mixed with water, and the resulting glucose solution is fermented. $\text{C}_6\text{H}_{12}\text{O}_6 \rightarrow 2\text{CO}_2 + 2\text{C}_2\text{H}_5\text{OH}$ glucose, $M_r = 180$ ethanol, $M_r = 46$ When fermentation is complete, $6.8\,\text{g}$ of ethanol is obtained from the solution. What is the percentage yield of ethanol?
- A7.4
- B7.6
- C14.8
- D29.6