Directions: Encircle the letter that corresponds to the correct answer. Post-assessment: 1. Two isomeric forms of a saturated hydrocarbon A. have the same structure. B. have different compositions of elements. C. have the same molecular formula. reaction. D. react vigorously with one another. 2. The reaction of water with aikene to produce an alcohol is a/an C. Combustion D. Addition A. Saponification B. Condensation The isomerism shown is C. positional D. geometric H H 3. A. chain B. functional The isomerism shown is HHH 台 H HM 4. C. positional D. geometric to proceed to completion. C. acid A. chain B. functional 5. Saponification of fats needs a strong D. base 6. What reaction takes place when a substance reacts with oxygen gas, releasing energy in the form of light and heat? A. halogen 3. catalyst C. Combustion D. Saponification A. Addition B. Condensation 7. What is lost as a product when a ketone and an aldehyde react to form a new Carbon-carbon C. acid D. alcohol bond? A. halogen B. water 8. Which of the following would undergo addition reactions? C. alkane D. alcohol A. halogen B. alkyne 9. Fats are typically in form of what? D. esters C. acid A. halogen B. alkyne 10. What is formed when a carboxylic acid and an alcohol undergo condensation reaction? C. new N-O bond A. new C-C bond B. new O-C bond D. ester Well donel You are now a STAR. knowledgeable enough in answering this week's lesson. As A stands for Academically proficient, you are now Thank youl See you on our next lessonl O WORK GREAT
Reactive Intermediates
In chemistry, reactive intermediates are termed as short-lived, highly reactive atoms with high energy. They rapidly transform into stable particles during a chemical reaction. In specific cases, by means of matrix isolation and at low-temperature reactive intermediates can be isolated.
Hydride Shift
A hydride shift is a rearrangement of a hydrogen atom in a carbocation that occurs to make the molecule more stable. In organic chemistry, rearrangement of the carbocation is very easily seen. This rearrangement can be because of the movement of a carbocation to attain stability in the compound. Such structural reorganization movement is called a shift within molecules. After the shifting of carbocation over the different carbon then they form structural isomers of the previous existing molecule.
Vinylic Carbocation
A carbocation where the positive charge is on the alkene carbon is known as the vinyl carbocation or vinyl cation. The empirical formula for vinyl cation is C2H3+. In the vinyl carbocation, the positive charge is on the carbon atom with the double bond therefore it is sp hybridized. It is known to be a part of various reactions, for example, electrophilic addition of alkynes and solvolysis as well. It plays the role of a reactive intermediate in these reactions.
Cycloheptatrienyl Cation
It is an aromatic carbocation having a general formula, [C7 H7]+. It is also known as the aromatic tropylium ion. Its name is derived from the molecule tropine, which is a seven membered carbon atom ring. Cycloheptatriene or tropylidene was first synthesized from tropine.
Stability of Vinyl Carbocation
Carbocations are positively charged carbon atoms. It is also known as a carbonium ion.
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