Alkynes (Organic Chemistry) - Statistics

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The average score is 11 of 40

Answer Stats

Hint	Answer	% Correct
An alkyne consists of one _____ and two __ Bonds	Sigma, Pi	100%
The bond angle of an alkyne is ___ degrees	180	67%
The hybridization of alkynes is __	sp	67%
pH of terminal alkynes	25	33%
What is a vicinal dihalide? Two halogens attached to _______ carbon atoms	adjacent	33%
The reaction yields an ________ instead of a ketone	aldehyde	33%
1 equivalent of X2 gives an ______ (E being major product)	alkene	33%
What starting material is used to make an alkyne?	alkyl dihalide	33%
Rate = k [______] [__]^2	alkyne, HX	33%
In prescence of peroxides, HBr undergoes ____-__________ addition	anti markovnikov	33%
Hydroboration-Oxidation of alkynes proceeds via ____-___________ addition	anti Markovnikov	33%
Why can't you use Na and NH3 (l) to reduce a terminal alkyne to an alkene? The alkyne will be ___________	deprotonated	33%
What reaction mechanism is used when forming an alkyne from an alkyl dihalide?	E2	33%
The intermediate takes the trans position because _____ repulsion	electron	33%
proton transfers and replacement of mercury yields an ____	Enol	33%
The reaction gives a mixture of _ and _ alkenes	E,Z	33%
Poisoned catalysts work by catalyzing the _____ step but not the ______ step	first, second	33%
With xs HX, X adds via Markovnikov addition and makes a _______ dihalide	geminal	33%
`The three reactants needed for this reaction are _____, ___, _____	HgSO4, H2O, H2SO4	33%
It will then tautomerize into a ______	Ketone	33%
In hydrohalogenation of alkynes with one equivalent of HX, X adds via ___________ addition	Markovnikov	33%
hydration of alkynes proceeds via __________ addition	Markovnikov	33%
A key intermediate being the _________ ion	Mercurium	33%
What base is commonly used to deprotonate an alkyne?	NaNH2	33%
What reagents are used to get a trans alkene from an internal alkyne?	Na, NH3 (l)	33%
Water will carry out a ____________ ______	nucleophilic attack	33%
Reduction of alkynes is performed with H2 and a platinum, nickel or a palladium catalyst. What type of catalyst is used when you want the reaction to stop at a cis alkene?	Poisoned catalyst	33%
What does geminal dihalide mean? Two halogens attached to the ____ carbon atom	same	33%
First (1)______ donates an electron, forming the radical intermediate, the anion takes a proton from (2)_______, then (1) _____ donates another electron to form an anion that finally takes another proton from (2) _______ to finish the reaction.	sodium, ammonia	33%
The mechanism for hydrohalogenation is ___molecular	ter	33%
Ozonolysis yields __________ ____ and/or _____ ______ when it is a terminal alkyne	carboxylic acids carbon dioxide	0%
The first step of alkylating an alkyne is ____________ with NaNH2	deprotonation	0%
How to reduce a terminal alkyne to alkene?	H2, Poisoned catalyst	0%
To go from an alkyl dihalide use xs_____, ___ (l), and H2O afterwards	NaNH2, NH3	0%
What is the P-2 catalyst (another poisoned catalyst)	Ni2B	0%
What reagents make up "Lindlar's catalyst"	Pd, CaCO3, PbO2	0%
This is a three step reaction with a _______ ____ intermediate	radical anion	0%
Then, the alkynide ion can be used in an ___ reaction with RX	SN2	0%
xs X2 yields a __________	tetrahalide	0%
Halogenation of alkynes needs __ as a reactant	X2	0%

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