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Brown and Poon O-Chem chapter 2 True False
Chapter 2 True/False Flash Cards
31
Organic Chemistry
Undergraduate 3
01/31/2012

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Cards

Term
If NH3 were to behave as an acid, its conjugate base would be NH2-.
Definition
True
Term
Delocalization of electron density is a stabilizing factor
Definition
True
Term
Amide ion, NH2-, is a Lewis base.
Definition
True
Term
H3O+ is a stronger acid than NH4+ and, therefore, NH3 is a stronger base than H2O.
Definition
True
Term
Inductive effects can be used to describe electron delocalization.
Definition
True
Term
The direction of equilibrium in an acid-base reaction favors the side containing the stronger acid and stronger base.
Definition
False
Term
The conjugate base of CH3CH2OH is CH3CH2O-.
Definition
True
Term
CH3+ and NH4+ are Lewis acids.
Definition
False
Term
Between a strong acid and a weak acid, the weak acid will give rise to the stronger conjugate base.
Definition
True
Term
H2O can function as an acid (proton donor) and as a base (proton acceptor).
Definition
True
Term
The strongest base that can exist in aqueous solution is OH-.
Definition
True
Term
A strong acid is one that completely ionizes in aqueous solution.
Definition
True
Term
NH3 is a Lewis base.
Definition
True
Term
A Bronsted-Lowry acid is a proton donor.
Definition
True
Term
When comparing the relative strength of acids, the stronger acid has the smaller value of pKa. 2.3
Definition
True
Term
When comparing the relative strengths of acids, the stronger acid has the smaller value of Ka. 2.3
Definition
False
Term
The formulas of a conjugate acid-base pair differ only by a proton. 2.2
Definition
True
Term
A Lewis base is an electron donor. 2.6
Definition
True
Term
Acetic acid, CH3COOH, is a stronger acid than carbonic acid, H2CO3, and therefore, acetate ion, CH3COO-, is a stronger base then bicarbonate ion, HCO3-. 2.2
Definition
False
Term
The strongest acid that can exist in aqueous solution is H3O+. 2.4
Definition
True
Term
A Lewis acid-base reaction results in the formation of a new covalent bond between the Lewis acid and the Lewis base. 2.6
Definition
True
Term
When a base accepts a proton in an acid-base reaction, it is converted into its conjugate base. 2.2
Definition
False
Term
When a metal hydroxide, MOH, dissolves in water, the solution becomes basic because of the presence of hydroxide ions, OH-. 2.1
Definition
True
Term
A Lewis acid is a proton acceptor. 2.6
Definition
False
Term
If NH3 were to behave as a base, its conjugate acid would be NH4+. 2.2
Definition
True
Term
Resonance effects can be used to describe electron delocalization. 2.5
Definition
True
Term
All Lewis acid-base reactions involve transfer of a proton from the acid to the base.
Definition
False
Term
BF3 is a Lewis acid. 2.6
Definition
True
Term
When HCl dissolves in water, the major ions present are the H+ and Cl-. 2.3
Definition
False
Term
Acid-base reactions take place only in aqueous solution. 2.6
Definition
False
Term
The conjugate acid of HCO3- is H2CO3. 2.2
Definition
True
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