Science Quiz / Alkene and Alkyne True-False

Random Science or Chemistry Quiz

Can you state whether each of these statements about alkene and aklyne reactions is TRUE or FALSE?

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Ozonolysis may be used to determine if an alkene were cis or trans.
Hydration of unsymmetrical internal alkynes using HgSO4, H2SO4, and water will result in the formation of two isomeric ketone products.

The molecule cis-cyclohexene should not exist.

Keto-enol tautomerization is synonymous with resonance.

To synthesize an acetylide anion, NaOMe may be used for deprotonation.
To synthesize a secondary propargyl alcohol, react an acetylide anion with a aldehyde and then perform an acid work-up.
C10H16 reacts with 1 equivalent of H2 upon catalytic hydrogenation. Ozonolysis of this molecule results in the formation of two carbonyls.

Addition of excess HCl to an alkyne results in the formation of a geminal dihalide.

The base NaNH2 is strong enough to deprotonate 2-hexyne.

2-pentyne may be synthesized from acetylene, a base, and 1-bromopropane.
In order to synthesize (3R,4S)-3,4-dibromohexane from 3-hexyne, one would reduce the alkyne to an alkene using H2/Lindlar's and then add Br2/CCl4.
An aldehyde may be synthesized from a terminal alkyne using HgSO4, H2SO4, and water.
To synthesize a trans alkene from the corresponding alkyne, use dissolving metal reduction conditions.

2-methylpropene is a good reagent to use to probe if a reaction is regiospecific.

There is no such molecule called cyclohexyne.

Ozonolysis of an internal alkyne will yield carboxylic acids.
In the mechanism of reducing an alkyne to an alkene, one step involves the transfer of a single electron from the sodium metal to the alkyne.

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