Che 233

Unsaturated fatty acids ______________. correct answer: have one or more C=C saturated fatty acids _________________. correct answer: do not have ANY C=C bonds, only C-C. what ways is biodiesel produced commercially? correct answer: * base catalyzed transesterification of the oil with methanol (what we used) * acid catalyzed esterification of the oil with methanol *saponification of the oil to yield free fatty acids, then acid catalyzed esterification FAME stands for: correct answe...

What are saturated vs unsaturated fatty acids? correct answer: •Saturated fatty acids have no C=C bonds (their C's have max # of Hs) •Unsaturated fatty acids have one or more C=C bonds (monosaturated = one double bond) (polyunsaturated = more than 1 double bond) •Z (cis) are naturally occurring double bonds; E (trans) are artificial double bonds How is biodiesel produced commercially? Which method is predominant? correct answer: ***1) Base catalyzed transesterification of oil with ...

Determine the limiting reagent and the excess reagent for the biodiesel lab Excess reagent _____________ limiting reagent _____________________ correct answer: methanol, triglyceride Complete the statements below by matching the following saturated fatty acids have ______ __________ bonds unsaturated fatty acids have _____ ____________ bonds correct answer: no C=C, one C=C The addition of water to sodium methoxide produces ___________ _______________ and _________________ corre...

biodiesel correct answer: comprised of long-chain FAMES(fatty acid methyl esters) three methods for production of Biodiesel correct answer: -catalyzed transesterification 2. acid-catalyzed transesterification 3. saponification followed by acid-catalyzed transesterification method used in experiment correct answer: base-catalyzed transesterification a-linoleic acid correct answer: 17 carbon chain three double bonds linoleic acid correct answer: 17 carbon chain two double bonds...

What is biodiesel correct answer: a fuel comprising long-chain fatty acid methyl esters (FAMEs) derived from vegetable oils or animal fats, designated B100 and meeting standard requirements. What methods can be used to make fatty acid methyl esters (FAME's)? correct answer: -Base-catalyzed transesterification -Acid-catalyzed esterification -Saponification of the oil to yield free fatty acids, followed by acid catalyzed esterification What are fatty acids? correct answer: carboxylic ...

Unsaturated fatty acids - have one or more C=C bonds Saturated fatty acids - Have no C=C bonds What are the ways that biodiesel is produced commercially? Which method is the predominant method? - 1) Base-catalyzed transesterification of the oil with methanol and one used in lab. 2)Acid-catalyzed esterification of the oil with methanol 3) Saponification of the oil to yield free fatty acids, followed by acid catalyzed esterification. Match the products and catalyst for the following tran...

Structure of 6,13-diphenylpentacene correct answer: 5 aromatic rings with 2 phenols attached at 6 and 13 What is the purpose of base in the aldol condensation reaction? correct answer: To react with an alpha hydrogen to form a nucleophile (the enolate anion) and as a catalyst Hexynide lithium reacts with 6,13-diphenylpentacene via.... correct answer: Nucleophilic addition to carbonyl What is the role of tin(II) chloride in the synthesis of pentacene derivative? correct answer: it re...

Mass spectrometry correct answer: Technique that sorts ions based on their mass to charge ratio Electron ionization correct answer: -Also known as hard ionization -Very energetic, produces fragments ("daughter ions") Electrospray ionization correct answer: -Also known as soft ionization -Species remains intact, form ions by attaching H+ (+1 amu) or Na+ (+23 amu) 3:1 correct answer: Mass spectrometry ratio that appears for Cl 1:1 correct answer: Mass spectrometry ratio that a...

In the experiment, you added water to the reaction vessel after the reaction was complete, but we did not discuss why. Based on what happened after adding the water, which of the following is the reason for the addition of water? a) lower the solubility of the product in solution so it precipitated out b) increase the solubility of the product in solution so it precipitated out c) lower the solubility of the product in solution so it stayed in solution d) increase the solubility of the pr...