Nucleophiles and electrophiles

Nucleophiles and electrophiles

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Flashcard

Chemistry

University

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a nucleophile?

Back

A nucleophile is a species that donates an electron pair to form a chemical bond in a reaction. Nucleophiles are typically negatively charged or neutral molecules with lone pairs of electrons.

2.

FLASHCARD QUESTION

Front

What is an electrophile?

Back

An electrophile is a species that accepts an electron pair to form a chemical bond in a reaction. Electrophiles are usually positively charged or electron-deficient species.

3.

FLASHCARD QUESTION

Front

Which of the following cannot react as a nucleophile: (CH₃)₄N⁺ or I⁻?

Back

(CH₃)₄N⁺ cannot react as a nucleophile because it is a positively charged species and lacks a lone pair of electrons to donate.

4.

FLASHCARD QUESTION

Front

What is the role of Lewis bases in chemical reactions?

Back

Lewis bases are electron pair donors. They can act as nucleophiles in reactions by donating their electron pairs to electrophiles.

5.

FLASHCARD QUESTION

Front

What is the role of Lewis acids in chemical reactions?

Back

Lewis acids are electron pair acceptors. They can act as electrophiles in reactions by accepting electron pairs from nucleophiles.

6.

FLASHCARD QUESTION

Front

Provide an example of a common nucleophile.

Back

A common nucleophile is the iodide ion (I⁻), which has a lone pair of electrons that it can donate.

7.

FLASHCARD QUESTION

Front

Provide an example of a common electrophile.

Back

A common electrophile is the carbocation CH₃⁺, which is electron-deficient and can accept electron pairs.

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