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test bank ochem 2 exam 1 2024/2025 Questions With Completed & Verified Solution.
test bank ochem 2 exam 1 2024/2025 Questions With Completed & Verified Solution.
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test bank ochem 2 exam 1How many distinct alkynes exist with a molecular formula of C4H6?
A) 0B) 1C) 2D) 3E) 4 - ANS 2
How many distinct terminal alkynes exist with a molecular formula of C5H8
A) 1B) 2C) 3D) 4E) 5 - ANS 2
Which of the following properly describes the physical properties of an alkyne?
A) relatively nonpolarB) nearly insoluble in waterC) less dense than waterD) insoluble in most
organic solventsE) boiling point nearly the same as an alkane with similar carbon skeleton -
ANS D) insoluble in most organic solvents
Which of the following alkynes has the lowest boiling point?
A) 3,3-dimethyl-1-butyneB) 1-hexyneC) 2-hexyneD) 3-hexyneE) 1-decyne - ANS A
What products result when calcium carbide is combined with water? - ANS acetylene and
calcium hydroxide
Which of the species below is less basic than acetylide?
A) CH3LiB) CH3ONaC) CH3MgBrD) both A and CE) all of the above - ANS B
Among the compounds water, but-1-yne, but-2-yne, and ethane, which are stronger acids than
ammonia?
A) but-1-yne and ethaneB) water and but-1-yne) water and ethaneD) but-1-ene and but-2-yne -
ANS A
To a solution of propyne in diethyl ether, one molar equivalent of CH3Li was added and the
resulting mixture was stirred for 0.5 hour. After this time, an excess of D2O was added. Describe
the major organic product(s) of this reaction.
A) CH3C≡CD + CH4B) CH3C≡CCH3C) CD3C≡CD3D) CH3C≡CCD3E) CH3C≡CD + CH3D -
ANS A
what isn't strong enough to deprotonate - ANS OH or oxides
Which of the following bases are sufficiently strong to deprotonate a terminal alkyne with an
equilibrium constant greater than
1?1)sodium methoxide3)n-butyl lithium2)lithium diisopropyl amide4)phenylmagnesium bromide
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