EasyChemistryHigh School (11–12)Organic Chemistry: Some Basic Principles and Techniques › Electronic Effects and Reaction IntermediatesConceptualA-Level IB

Say whether each species is a nucleophile or an electrophile, and give a reason…

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Try it on paper first. A hint, the key idea and the worked solution are here when you need them.

Say whether each species is a nucleophile or an electrophile, and give a reason.

$\text{CH}_3\text{O}^{-}$

$\text{SO}_3$

$(\text{CH}_3)_3\text{C}^{+}$

$\text{CH}_3\text{NH}_2$

$\text{FeBr}_3$

Need a reminder? The key ideaShow

A nucleophile is electron-rich and gives a pair. An electrophile is electron-poor and takes one. There are four types of reaction. Substitution replaces a group, with two molecules in and two out. Addition joins two molecules into one and uses up a pi bond. Elimination removes a small molecule and makes a pi bond. Rearrangement moves atoms inside one molecule. When counting bonds, a double bond holds one sigma bond and one pi bond.

The worked solution

Have you tried it?

Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.

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Say whether each species is a nucleophile or an electrophile, and give a reason…

The worked solution

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