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Which reagents shown below would be expected to convert 2-pentyne to (Z)-2-pentene?

What is the expected major product of the reaction sequence shown below?

For the reaction shown, which of the compounds below would be the expected enol intermediate?

Select the best word or phrase that completes each sentence (alkynes, enol, keto, with, without, aldehydes, tautomers, acetylide, ionic, resonance, higher,  lower,  decreases, increases,  rotation, alkenes, ketones, carboxylic acids, nitrogen, bromine, chlorine, oxygen, cis, trans, anti, dihydroxylation, epoxidation, oxidative, reduction, syn,  odd, even, hydroboration, regioselective, above , below, allylic)   ………………….  anions are strong nucleophiles that react with primary alkyl halides by an SN2 mechanism.  Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

For the reaction shown, which of the compounds below would be the expected enol intermediate?

Rank the following acids, with the strongest acid first, then by decreasing acidity. Ethyne          H2O           CH3CH3            HF      1                 2                 3                       4

What is the expected major product of the reaction sequence shown below?

Select the reagent(s) expected to accomplish the transformation shown below.

In the addition of HBr to 1-butyne, the electrophile in the first step of the mechanism is:

Select the best word or phrase that completes each sentence (alkynes, enol, keto, with, without, aldehydes, tautomers, acetylide, ionic, resonance, higher, lower, decreases, increases,  rotation, alkenes, ketones, carboxylic acids, nitrogen, bromine, chlorine, oxygen, cis, trans, anti, dihydroxylation, epoxidation, oxidative, reduction, syn, alkylation, odd, even, hydroboration, regioselective, above , below, allylic)   …………………..  are constitutional isomers that differ in the location of a double bond and a hydrogen and exist in an equilibrium with each other. Complete word/phrase and correct spelling (verbatim) is required. No partial credit.