객관식
What causes changes in the shape of the active site of an enzyme when the changes?
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- 1. A Review of General Chemistry5h 6m
- Summary23m
- Intro to Organic Chemistry4m
- Atomic Structure17m
- Wave Function9m
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- Formal Charges6m
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- Constitutional Isomers14m
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- Molecular Geometry16m
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- 2. Molecular Representations1h 14m
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- R and S Configuration43m
- Enantiomers vs. Diastereomers13m
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- Test 3:Disubstituted Cycloalkanes13m
- What is the Relationship Between Isomers?16m
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- 6. Thermodynamics and Kinetics1h 22m
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- 13. Alcohols and Carbonyl Compounds2h 17m
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- 15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
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- NMR Integration18m
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- 16. Conjugated Systems6h 15m
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- Reactions at the Allylic Position39m
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- EAS:Halogenation Mechanism6m
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- 21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
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- 22. Carboxylic Acid Derivatives: NAS2h 51m
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- Review of Nitriles46m
- 23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
- 24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 50m
- Tautomerization9m
- Tautomers of Dicarbonyl Compounds6m
- Enolate4m
- Acid-Catalyzed Alpha-Halogentation4m
- Base-Catalyzed Alpha-Halogentation3m
- Haloform Reaction8m
- Hell-Volhard-Zelinski Reaction3m
- Overview of Alpha-Alkylations and Acylations6m
- Enolate Alkylation and Acylation12m
- Enamine Alkylation and Acylation16m
- Beta-Dicarbonyl Synthesis Pathway7m
- Acetoacetic Ester Synthesis13m
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- 25. Condensation Chemistry2h 9m
- 26. Amines1h 43m
- 27. Heterocycles2h 0m
- Nomenclature of Heterocycles15m
- Acid-Base Properties of Nitrogen Heterocycles10m
- Reactions of Pyrrole, Furan, and Thiophene13m
- Directing Effects in Substituted Pyrroles, Furans, and Thiophenes16m
- Addition Reactions of Furan8m
- EAS Reactions of Pyridine17m
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- Side-Chain Reactions of Substituted Pyridines20m
- 28. Carbohydrates5h 54m
- Monosaccharide20m
- Monosaccharides - D and L Isomerism9m
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- Monosaccharides - Kiliani-Fischer23m
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- Disaccharide30m
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- 29. Amino Acids4h 16m
- Proteins and Amino Acids19m
- L and D Amino Acids14m
- Polar Amino Acids14m
- Amino Acid Chart1h 14m
- Acid-Base Properties of Amino Acids33m
- Isoelectric Point14m
- Amino Acid Synthesis: HVZ Method12m
- Synthesis of Amino Acids: Acetamidomalonic Ester Synthesis16m
- Synthesis of Amino Acids: N-Phthalimidomalonic Ester Synthesis13m
- Synthesis of Amino Acids: Strecker Synthesis13m
- Reactions of Amino Acids: Esterification7m
- Reactions of Amino Acids: Acylation3m
- Reactions of Amino Acids: Hydrogenolysis6m
- Reactions of Amino Acids: Ninhydrin Test11m
- 30. Peptides and Proteins2h 42m
- Peptides12m
- Primary Protein Structure4m
- Secondary Protein Structure17m
- Tertiary Protein Structure11m
- Disulfide Bonds17m
- Quaternary Protein Structure10m
- Summary of Protein Structure7m
- Intro to Peptide Sequencing2m
- Peptide Sequencing: Partial Hydrolysis25m
- Peptide Sequencing: Partial Hydrolysis with Cyanogen Bromide7m
- Peptide Sequencing: Edman Degradation28m
- Merrifield Solid-Phase Peptide Synthesis18m
- 31. Catalysis in Organic Reactions1h 30m
- 32. Lipids 2h 50m
- 33. The Organic Chemistry of Metabolic Pathways2h 52m
- Intro to Metabolism6m
- ATP and Energy6m
- Intro to Coenzymes3m
- Coenzymes in Metabolism16m
- Energy Production in Biochemical Pathways5m
- Intro to Glycolysis3m
- Catabolism of Carbohydrates: Glycolysis27m
- Glycolysis Summary15m
- Pyruvate Oxidation (Simplified)4m
- Anaerobic Respiration11m
- Catabolism of Fats: Glycerol Metabolism11m
- Intro to Citric Acid Cycle7m
- Structures of the Citric Acid Cycle19m
- The Citric Acid Cycle35m
- 34. Nucleic Acids1h 32m
- 35. Transition Metals6h 14m
- Electron Configuration of Elements45m
- Coordination Complexes20m
- Ligands24m
- Electron Counting10m
- The 18 and 16 Electron Rule13m
- Cross-Coupling General Reactions40m
- Heck Reaction40m
- Stille Reaction13m
- Suzuki Reaction25m
- Sonogashira Coupling Reaction17m
- Fukuyama Coupling Reaction15m
- Kumada Coupling Reaction13m
- Negishi Coupling Reaction16m
- Buchwald-Hartwig Amination Reaction19m
- Eglinton Reaction17m
- Catalytic Allylic Alkylation18m
- Alkene Metathesis23m
- 36. Synthetic Polymers1h 49m
- Introduction to Polymers6m
- Chain-Growth Polymers10m
- Radical Polymerization15m
- Cationic Polymerization8m
- Anionic Polymerization8m
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- Copolymers6m
- Step-Growth Polymers11m
- Step-Growth Polymers: Urethane6m
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- Step-Growth Polymers: Epoxy Resin8m
- Polymers Structure and Properties8m
3. Acids and Bases
Acids and Bases
객관식
Which of the following is the correct definition of a Lewis acid?
A
A substance that accepts a proton () in a chemical reaction.
B
A substance that accepts an electron pair in a chemical reaction.
C
A substance that donates an electron pair in a chemical reaction.
D
A substance that donates a proton () in a chemical reaction.
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검증된 단계별 안내1
Identify the concept of Lewis acids and bases. A Lewis acid is defined as a substance that can accept an electron pair, while a Lewis base is a substance that can donate an electron pair.
Review the options provided in the problem. The options describe different types of acids and bases, including those that involve protons (H+).
Recognize that the definition involving the acceptance of an electron pair corresponds to the concept of a Lewis acid.
Differentiate between the Lewis and Brønsted-Lowry definitions. A Brønsted-Lowry acid is one that donates a proton (H+), which is different from the Lewis definition.
Conclude that the correct definition of a Lewis acid is 'A substance that accepts an electron pair in a chemical reaction,' as it aligns with the Lewis theory of acids and bases.
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