Question 1

Which of the following terms comes closest to describing an electrophile?
A) anion
B) Lewis base
C) Lewis acid
D) nucleophile
E) nonpolar

Accepted Answer

An electrophile is a molecule or ion that accepts a pair of electrons from a donor molecule or ion. Lewis acids are electron pair acceptors and can act as electrophiles. Anions, Lewis bases, and nucleophiles are all electron pair donors and would not be classified as electrophiles. Nonpolar is not relevant to this concept.

Question 2

In the reaction below, label each reactant as a nucleophile or an electrophile.

Accepted Answer

The answer of In the reaction below, label each reactant...

Question 3

According to the Lewis definition, which of the following may act as acids? A) NH₃ B) HCl C) AlCl₃ D) A & B E) A, B, & C

Accepted Answer

According to the Lewis definition, an acid is a substance that can accept a pair of electrons. All the given options, including ammonia (NH₃, which seems to be a typographical error for NH3), HCl, and AlCl₃ (presumably meant to be AlCl3), can act as Lewis acids. NH3 can act as a Lewis base but in certain contexts, it can accept an electron pair, making it a Lewis acid. HCl can donate a proton (H+) and accept an electron pair in the process, and AlCl3 can accept an electron pair due to the empty orbitals of aluminum.

Question 4

In the reaction below, label each reactant as a nucleophile or an electrophile. CH₃COO^- + O₂S(OCH₃)₂ → CH₃COOCH₃ + CH₃OSO₃^-

Accepted Answer

The answer of In the reaction below, label each reactant...

Question 5

Use the curved arrow formalism to show the movement of electron pairs in the following reaction.

Accepted Answer

The answer of Use the curved arrow formalism to show...

Question 6

The hydroxide ion (HO^-) cannot function well as which of the following? A) a Bronsted-Lowry base B) a Lewis base C) a nucleophile D) an electron-pair acceptor E) a proton acceptor

Accepted Answer

The hydroxide ion is a strong Bronsted-Lowry base as it can accept a proton to form water. It is also a Lewis base as it can donate its lone pair of electrons to form a coordinate covalent bond. It is a nucleophile as it can attack an electrophile by donating its lone pair of electrons. However, it cannot function well as an electron-pair acceptor as it already has a full octet of electrons and cannot accept any more electrons.

Question 7

Use the curved arrow formalism to indicate the movement of electron pairs in the following reaction.

Accepted Answer

The answer of Use the curved arrow formalism to indicate...

Quiz 1: Structure and Bonding

Which of the following terms comes closest to describing an electrophile?

In the reaction below, label each reactant as a nucleophile or an electrophile.

According to the Lewis definition, which of the following may act as acids?

In the reaction below, label each reactant as a nucleophile or an electrophile. CH3COO- + O2S(OCH3)2 → CH3COOCH3 + CH3OSO3-

Use the curved arrow formalism to show the movement of electron pairs in the following reaction.

The hydroxide ion (HO-) cannot function well as which of the following?

Use the curved arrow formalism to indicate the movement of electron pairs in the following reaction.

In the reaction below, label each reactant as a nucleophile or an electrophile. CH₃COO^- + O₂S(OCH₃)₂ → CH₃COOCH₃ + CH₃OSO₃^-

The hydroxide ion (HO^-) cannot function well as which of the following?