Question

Study the following information given and answer the questions that follow. Ethanol is a renewable biofuel because it is made from biomass. Ethanol is a clear, colourless alcohol made from a variety of biomass materials. Ethanol producers mostly use food grains and crops with high starch and sugar content such as corn, sorghum, barley, sugar cane, and sugar beets. The most common ethanol production processes today use yeast to ferment the starch and sugars in corn, sugar cane, and sugar beets. (a) What is the chemical formula for ethanol? (b) What other compound is obtained as a by-product when ethanol is obtained from a sugar? (c) What would be the products formed when ethanol undergoes complete combustion? Support your answer with a balanced chemical equation.