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Questions and Answers
What is the purpose of the Henderson-Hasselbalch equation?
What is the purpose of the Henderson-Hasselbalch equation?
- To calculate the pH of a buffer solution (correct)
- To quantify the pH change upon addition of a large amount of base
- To determine the pKa value of a strong acid
- To evaluate the basicity of a conjugate base
What does the isoelectric point (pI) represent for amino acids?
What does the isoelectric point (pI) represent for amino acids?
- The pH where amino acids have no net electrical charge (correct)
- The point where amino acids are at their highest basicity
- The point where amino acids exhibit the highest buffer effectiveness
- The pH at which amino acids act as strong acids
Why is it important to choose a buffer with a pKa close to the desired pH of the solution?
Why is it important to choose a buffer with a pKa close to the desired pH of the solution?
- To maximize the acidic proton loss potential
- To ensure the solution becomes highly acidic
- To maintain the buffer's effectiveness in resisting pH changes (correct)
- To increase the buffer's basicity
Which of the following is true about polyprotic acids?
Which of the following is true about polyprotic acids?
In what pH range is a buffer solution typically effective?
In what pH range is a buffer solution typically effective?
What type of acid is H2SO4 based on its ability to donate protons?
What type of acid is H2SO4 based on its ability to donate protons?
What is the role of zwitterions in a compound?
What is the role of zwitterions in a compound?
How do buffers minimize pH changes in a system?
How do buffers minimize pH changes in a system?
What is the effective pH range of a buffer considered to be?
What is the effective pH range of a buffer considered to be?
How does buffer capacity relate to the concentration of buffer components?
How does buffer capacity relate to the concentration of buffer components?
Why is it important to select a buffer with a pKa close to the desired pH?
Why is it important to select a buffer with a pKa close to the desired pH?
What factor should be considered in selecting a suitable buffer for a study?
What factor should be considered in selecting a suitable buffer for a study?
Which of the following buffers would be most suitable for maintaining a slightly acidic pH in biochemical studies?
Which of the following buffers would be most suitable for maintaining a slightly acidic pH in biochemical studies?
At which pH range is the Phosphate Buffer most effective?
At which pH range is the Phosphate Buffer most effective?
Which of the following buffers is suitable for alkaline conditions?
Which of the following buffers is suitable for alkaline conditions?
What does a lower pKa value indicate about an acid?
What does a lower pKa value indicate about an acid?
Why is the Tris Buffer often used in DNA extraction and gel electrophoresis?
Why is the Tris Buffer often used in DNA extraction and gel electrophoresis?
In which pH range do functional groups with lower pKa values lose protons first according to the text?
In which pH range do functional groups with lower pKa values lose protons first according to the text?
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