Blood Buffer - Experiment, Step 3

Step 3



3. Add 30 ml of 0.1 M HCl. To make the buffer, we need to have significant amounts of both HCO3- and H2CO3 in solution. Adding HCl converts some of the bicarbonate into carbonic acid.



Read pH
View closeup taken after several minutes have passed.


Record your observations.

Q5: A gas was produced when the HCl was added. How did you observe this?

Q6: What gas was produced?

Q7: Write the reaction that occurred?

Q8: How does the pH of the solution compare to that of blood?

Q9: Referring to your answer to Q7, is there more H2CO3 or HCO3- present in the beaker?



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