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Questions and Answers
What equation is used to calculate the pH of buffers?
What equation is used to calculate the pH of buffers?
- Gibbs free energy equation: $ riangle G = riangle H - T riangle S$
- Henderson-Hasselbalch equation: $pH = pKa + ext{log}(rac{[A^-]}{[HA]})$ (correct)
- Nernst equation: $E = E^{ heta} - rac{RT}{nF} ext{ln}Q$
- Arrhenius equation: $k = A e^{-E_a/RT}$
Which factor affects the buffer capacity of a buffer solution?
Which factor affects the buffer capacity of a buffer solution?
- Temperature of the solution
- Presence of a catalyst
- Concentration of the buffer components (correct)
- Volume of the solvent
What is the ionization constant (Ka) for Acetylsalicylic acid?
What is the ionization constant (Ka) for Acetylsalicylic acid?
- 1.74x10^-3
- 7.9x10^-9
- 3.27x10^-4 (correct)
- 1.2x10^-10
What is the pKa value for Boric acid?
What is the pKa value for Boric acid?
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What is the pKb value for Ammonia?
What is the pKb value for Ammonia?
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