Welcome to the Quiz!
This quiz contains 11 questions from a mix of 1 subtopics.
What is the general structure of an ester?
R-COOR'
R-COOH
R-COO-R'
R-OH
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Which part of the ester name comes from the alcohol used in its synthesis?
the first part
the second part
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What is the primary use of esters in the food and fragrance industries?
as flavourings and perfumes
as fuels
as plasticisers
as solvents
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What is the process of breaking down esters into their original alcohol and carboxylic acid components using water called?
esterification
transesterification
saponification
hydrolysis
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Which of the following is a difference between animal fats and vegetable oils?
animal fats contain saturated fatty acids, while vegetable oils contain unsaturated fatty acids
animal fats are triglycerides, while vegetable oils are not
animal fats are esters, while vegetable oils are not
animal fats are liquid at room temperature, while vegetable oils are solid
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What is the product of hydrolysing fats and oils with sodium hydroxide?
soap
glycerol
methyl esters
biodiesel
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Which of the following is NOT a product of the base hydrolysis of esters?
carboxylic acid
carboxylate salt
alcohol
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What is the role of methanol in the production of biodiesel?
it reacts with the vegetable oil to form glycerol
it reacts with the vegetable oil to form methyl esters
it is used to purify the final product
it acts as a catalyst
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What is the term for the reaction between a carboxylic acid and an alcohol to form an ester?
hydrolysis
esterification
transesterification
saponification
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Animal fats and vegetable oils are made from the alcohol and long chain fatty acids.
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What catalyst is used in the esterification reaction between carboxylic acids and alcohols?
concentrated NaOH
concentrated H2SO4
acidified K2Cr2O7
acidified KMnO4
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