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Questions and Answers
What is a zwitterion?
What is a zwitterion?
- A molecule with only positively charged functional groups
- A molecule that cannot form hydrogen bonds
- A molecule with equal number of positively and negatively charged functional groups (correct)
- A molecule with only negatively charged functional groups
What are betaines?
What are betaines?
- Molecules that do not form hydrogen bonds
- Zwitterions that cannot isomerize to an all-neutral form (correct)
- Zwitterions with only positively charged functional groups
- Molecules with uneven distribution of charges
What is the stoichiometry for tautomerism of amino acids?
What is the stoichiometry for tautomerism of amino acids?
- RCH(NH2)CO2H + RCN(N+H3)CO−2
- 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
How are zwitterions stabilized in aqueous solution?
How are zwitterions stabilized in aqueous solution?
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What do the pKa values for deprotonation of the common amino acids span approximately?
What do the pKa values for deprotonation of the common amino acids span approximately?
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