C10.3 Reactions and use of alcohols
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What is the main use of ethanol?
➢ Main alcohol in alcoholic drink
How is Ethanol made by sugars??
➢ Made by fermenting sugars from plant materials with yeast and is becoming an important alternative fuel to petrol and diesel - temperature about 30 degrees and a catalyst
What is the equation for the fermentation of ethanol?
➢ Glucose (with yeast) makes ethanol + carbon dixoide
How else is ethanol made with steam?
➢ Reacting ethene and steam in the presence of a catalyst about 300 degrees
Why are alcohols useful as solvents?
➢ Because they can dissolve easily with many other organic compounds
What does the complete combustion of alcohol make?
➢ Ethanol + oxygen makes carbon dioxide + water
What is affervesces?
➢ Gives off bubbles of gas
What is the chemical equation of the reaction between sodium and ethanol?
➢ Sodium + ethanol makes sodium ethoxide + hydrogen
What is another way to oxidise an alcohol by an agent?
➢ Adding a chemical oxidising agent
How can ethanoic acid be made from an alcohol?
➢ Ethanol + an oxidising agent with contains oxygen atom makes ethanoic acid + water
How else is ethanoic acid made?
➢ When ethanol is exposed to air ➢ Microbes in the air produce ethanoic acid from the ethanol