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NSWChemistryQuick questions
Module 6: Acid/Base Reactions
Quick questions on Buffer applications, blood pH, and Henderson-Hasselbalch explained: HSC Chemistry Module 6
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the bicarbonate buffer in blood?Show answer
Arterial blood is maintained at pH by a coupled buffer-respiratory-renal system. The dominant chemical buffer is the bicarbonate pair:
What is response to added strong acid?Show answer
The conjugate base consumes it:
What is response to added strong base?Show answer
The weak acid consumes it:
What is q1?Show answer
State the Henderson-Hasselbalch equation and explain what it predicts for a buffer with equal concentrations of weak acid and conjugate base. [3 marks]
What is q2?Show answer
Calculate the volume of 0.10 mol L HCl that can be added to 250 mL of a phosphate buffer (containing 0.050 mol and 0.050 mol ) before the pH drops by more than 0.1 unit. [3 marks]
What is q3?Show answer
Describe the bicarbonate buffer system and its compensation mechanisms. (a) Write the buffer equilibrium. (b) Explain respiratory compensation.
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