2. Why is a large excess of acetic acidused in the preparation of isopentyl acetate?
3. Concentrated sulfuric acid is used as a catalyst for the esterification of acetic acid in the preparation of isopentyl acetate. Why is sulfuric acid needed if another acid, acetic acid, is already present?
4. Fatty acids are long-chain carboxylic acids, usually of 12 or more carbonatoms, isolated from saponification of fatsand oils (esters of glycerol). Draw the structureof the two fatty acids named below and also determine their common name.
1. Hexadecanoic acid
2. Octadecanoic acid
5. Gaschromatographic analysis of a mixture of organic compoundsgave the following peak areas (sq cm): Hexane=2.7: heptane= 1.6; hexanol= 1.8; toluene=0.5.
a. Calculate the molepercent composition of the mixture. Assume that the response of the detector (area per mole) is the same for each component.
b. Calculate the weight percent composition of the mixture, using the same assumptions as in part a.
Pre lab question for organic chemistry explaining esterification, using excess of reagents, gas chromatographic analysis, percent yield