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Zwitterions and Betaines

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Questions and Answers

Which type of molecule cannot isomerize to an all-neutral form?

Molecules with a phosphonium group

Molecules with a carboxylate group

Betaines (correct)

Amino acids

What is a zwitterion in chemistry?

A molecule containing an equal number of positively and negatively charged functional groups (correct)

A molecule with a net positive charge

A molecule with no charged functional groups

A molecule with a net negative charge

What is the stoichiometry of tautomerism of amino acids?

RCH(NH2)CO2H ⇌ RCN(N+H3)CO−2 (correct)

RCH(NH2)CO2H + RCN(N+H3)CO−2

RCH(NH2)CO2H → RCN(N+H3)CO−2

RCH(NH2)CO2H ↔ RCN(N+H3)CO−2

What stabilizes the zwitterion in aqueous solution?

Hydrogen bonding with solvent water molecules Signup and view all the answers

Which functional group combination prevents isomerization to an all-neutral form?

Phosphonium group and a carboxylate group Signup and view all the answers

What is another name for a zwitterion?

Inner salt Signup and view all the answers

Why can betaines not isomerize to an all-neutral form?

Presence of a quaternary ammonium group Signup and view all the answers

What stabilizes the zwitterion in aqueous solution?

Hydrogen bonding with solvent water molecules Signup and view all the answers

What stoichiometry describes the tautomerism of amino acids?

RCH(NH2)CO2H ⇌ RCN(N+H3)CO−2 Signup and view all the answers

Which functional group combination prevents isomerization to an all-neutral form?

Phosphonium group and carboxylate group Signup and view all the answers

Zwitterions and Betaines

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Podcast

Questions and Answers

Which type of molecule cannot isomerize to an all-neutral form?

What is a zwitterion in chemistry?

What is the stoichiometry of tautomerism of amino acids?

What stabilizes the zwitterion in aqueous solution?

Which functional group combination prevents isomerization to an all-neutral form?

What is another name for a zwitterion?

Why can betaines not isomerize to an all-neutral form?

What stabilizes the zwitterion in aqueous solution?

What stoichiometry describes the tautomerism of amino acids?

Which functional group combination prevents isomerization to an all-neutral form?

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