Q.Describe how ethanol is manufactured by fermentation, and give two important uses of ethanol.

Ethanol is manufactured by fermenting a sugar solution (from sugarcane, grain or other fermentable feedstock) with yeast; the yeast's enzyme complex, zymase, converts glucose directly into ethanol and carbon dioxide: $\text{C}_6\text{H}_{12}\text{O}_6 \xrightarrow{\text{zymase}} 2\,\text{C}_2\text{H}_5\text{OH} + 2\,\text{CO}_2$. The resulting dilute ethanol solution is then concentrated by fractional distillation. Among ethanol's many uses, two important ones are as the alcohol in alcoholic beverages and as a solvent for paints, perfumes and pharmaceuticals, and, separately, as a topical antiseptic that ki …

State the fermentation equation with the enzyme named, then give any two of ethanol's …

Confusing fermentation (yeast/zymase, from sugars) with the industrial hydration-of-ethene route, or omitting the enzyme name/catalyst tha …