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Can someone help with the 4 POST LAB questions thanks

Carboxylic Acids and Esters acid). like citric acid. Face crearboxyl the name implies, a Carbexylic Aclds A salad dressing made of The sour taste of fruits such as lemons is due to the presence of acids like citric acid. tcarboxyl a-hydroxy acids such functional group - that is, a carbonyl group attached to a hydroxyl group. AS dicarboxylic acid carboxylic acid of benzene is called benzoic acid (Figure 1). oil and vinegar tastes tart because the vinegar contains acetic acid (ethanoic as glycolic acid. All of these acids are carboxylic acids, which contain the such as malonic acid (found in apples) has two carboxylic acid functional groups The 0 ??? HO benzoie acid acetic acid prepionic acid malenic acid Figure 1. Compounds containing the carboxylic acid functional group (highlighted in red). use the carboxylic acid group ionizes slightly in water to give a Carboxylic acids are weak acids beca and a carboxylate ion (Figure 2). However, like the alcohol makes acids with one to four carbon atoms soluble in water. By extension, acids with two or mone groups (diacids) are more soluble in water Is, the polarity of the carboxylic acid group carboxyl + H3O ?? 0 Figure 2. Ionization of acetic acid in water An important feature of carboxylic acids is their neutralization by bases such as sodium hydroxide (NaOH) to form carboxylate salts and water (Figure 3). (Neutralization, by definition, is the reaction between an acid and a base, yielding a salt and water.) Even insoluble carboxylic acids with five or more carbon atoms can be neutralized to give corresponding salts that are usually soluble in water. For this reason, acids used in food products or medications are in their soluble carboxylate salt form rather than the acid (e.g, sodium citrate, sodium acetate). 47

Answer 1

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4 ester synthesis|
4 hydrolysis of ester saponification reaction