Oils and fats 0.0 / 5 ? ChemistryColour by DesignA2/A-levelOther Created by: J.E.C.Created on: 29-04-14 17:00 Oils are __ at room temperature whereas fats are ___? Liquid, solid 1 of 11 Most oils and fats are esters of? Propane-1,2,3-triol with long chain carboxylic acids 2 of 11 A carboxylic acid can form an __ __ to each glycerol? Ester linkage 3 of 11 The alkyl groups are either fully __ or contain one or more ___ bonds? Saturated, double 4 of 11 Any natural oil or fat contains a mixture of ___? Triesters 5 of 11 Oils and fats can be split up by...? This is usually done by...? Hydrolysis. Heating the oil or fat with concentrated sodium hydroxide solution. 6 of 11 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. 7 of 11 The more unsaturated __ __ molecules in a triglyceride mixture, the more likely it is to be ___ at room temperature? Fatty acid, liquid 8 of 11 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. 9 of 11 Modern maragarines are made by passing hydrogen through __ __ containing a __ catalyst? Heated oil, nickel 10 of 11 Hydrogenation is an ___ reaction? Addition 11 of 11
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