Oils and fats

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  • Created by: J.E.C.
  • Created on: 29-04-14 17:00
Oils are __ at room temperature whereas fats are ___?
Liquid, solid
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Most oils and fats are esters of?
Propane-1,2,3-triol with long chain carboxylic acids
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A carboxylic acid can form an __ __ to each glycerol?
Ester linkage
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The alkyl groups are either fully __ or contain one or more ___ bonds?
Saturated, double
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Any natural oil or fat contains a mixture of ___?
Triesters
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Oils and fats can be split up by...? This is usually done by...?
Hydrolysis. Heating the oil or fat with concentrated sodium hydroxide solution.
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Usaturated triglyceride molecules cannot pack as closely together because the presence of...?
z double bonds causing the molecules to 'kink'. The attractive bonds between molecules will be weaker.
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The more unsaturated __ __ molecules in a triglyceride mixture, the more likely it is to be ___ at room temperature?
Fatty acid, liquid
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The hydrogenation of an unsaturated oil produces...? This process works by...? As a result the substance becomes a...?
Margarine. Adding hydrogen to unsaturated molecules reducing the number of souble bonds. Solid.
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Modern maragarines are made by passing hydrogen through __ __ containing a __ catalyst?
Heated oil, nickel
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Hydrogenation is an ___ reaction?
Addition
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Other cards in this set

Card 2

Front

Most oils and fats are esters of?

Back

Propane-1,2,3-triol with long chain carboxylic acids

Card 3

Front

A carboxylic acid can form an __ __ to each glycerol?

Back

Preview of the front of card 3

Card 4

Front

The alkyl groups are either fully __ or contain one or more ___ bonds?

Back

Preview of the front of card 4

Card 5

Front

Any natural oil or fat contains a mixture of ___?

Back

Preview of the front of card 5
View more cards

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