Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

2. Water

Acid Dissociation Constant

Biochemistry

2. Water

Acid Dissociation Constant

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Multiple Choice

Which of the following is the strongest acid listed?

Lactic acid, Ka = 1.38 x 10^-4

Formic acid, pKa = 3.75

Acetic acid, Ka = 1.76 x 10^-5

Proprionic acid, pKa = 4.87

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Verified step by step guidance

Understand that the strength of an acid is determined by its ability to donate protons, which is quantified by its dissociation constant (Ka) or its pKa value.

Recall that a larger Ka value indicates a stronger acid, as it implies a greater degree of ionization in solution.

Alternatively, a smaller pKa value indicates a stronger acid, since pKa is the negative logarithm of the Ka value (pKa = -log(Ka)).

Compare the given Ka and pKa values: Lactic acid has a Ka of 1.38 x 10^-4, Acetic acid has a Ka of 1.76 x 10^-5, Formic acid has a pKa of 3.75, and Proprionic acid has a pKa of 4.87.

Convert the pKa values to Ka values for comparison: Formic acid (pKa = 3.75) and Proprionic acid (pKa = 4.87). Calculate their Ka values using the formula Ka = 10^(-pKa) and compare all Ka values to determine the strongest acid.