HSC Chemistry

[...] used as a fuel-additive in automobiles, up to about 20% ethanol. –        As a renewable resource: Ethanol can be a renewable resource because it can be derived from non-fossil [...]

[...] is currently an uneconomic proposition. –        ADVANTAGES of ethanol: It is a renewable resource. It is “greenhouse” neutral; that is, the CO2 absorbed by the crop (e.g. corn) [...]

–        There are a few forms in which ethanol can be used as an alternative car fuel; these include ethanol/petrol mixtures, very pure etha [...]

–        The industrial production of ethanol from sugar-cane uses a few more chemicals (some of which are toxic) and processes compared to e [...]

–        Molecular modelling kits were used to model: the addition of water to ethylene (hydration). the removal of water from ethanol (deh [...]

–        There are a few forms in which ethanol can be used as an alternative car fuel; these include ethanol/petrol mixtures, very pure etha [...]

–        The industrial production of ethanol from sugar-cane uses a few more chemicals (some of which are toxic) and processes compared to e [...]

–        Molecular modelling kits were used to model: the addition of water to ethylene (hydration). the removal of water from ethanol (deh [...]

–        Yeast is added to mashed grain and water. –        The yeast and other microbes break down the large carbohydrates (e.g. s [...]

[...] atmosphere in the flasks was not anaerobic (oxygen-free) and this could have hampered the fermentation process. [...]

[...] °C, and dilute sulfuric acid is added. This hydrolyses the cellulose and sucrose into glucose molecules. The mixture is filtered to separate the glucose solution from the solid residues of [...]

[...] to form ethanol and carbon dioxide. The yeast cells first split sucrose into two glucose molecules using the invertase enzyme . –        A 250 mL side-arm conical flask with a [...]

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[...] . Engines wear down faster due to the need for higher engine compression ratios needed for ethanol combustion. Large areas of land are required to grow crops that will be harvested for ethanol [...]