c3.5 Organic Chemistry
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What type of organic compound is ethyl propanoate
Ester
Organic compounds such as ethyl propanoate are used in perfumes. Give two properties of these compounds that make them suitable for use in perfumes. [2]
Pleasant smell [1] Volatile (evaporate easily) [1]
Ethanol is an alcohol. One use of ethanol is in alcoholic drinks. Give two other uses of ethanol. [2]
Fuel Solvent Antiseptic
What type of reaction produces ethanoic acid from ethanol?
oxidation
Solutions of ethanoic acid and hydrochloric acid with the same concentration have different pH values. Explain why the solution of ethanoic acid has a higher pH than the solution of hydrochloric acid. [2]
ethanoic acid is a weak acid because it partially ionises
Name the ester made from ethanol and ethanoic acid. [1]
ethyl ethanoate
What type of chemical is used as a catalyst in this reaction? [1]
acid
Esters are used in perfumes because they smell pleasant and are volatile. What does volatile mean? [1]
evaporates easily / quickly
When acids react with scale a gas is produced. What is the name of the gas? [1]
Carbon dioxide
The student found that hydrochloric acid reacts faster than ethanoic acid with scale. Explain why hydrochloric acid reacts faster than ethanoic acid. [2]
hydrochloric acid is a strong acid which fully ionises