4 The solution on the right became more acidic which decreased the level of O 2

4 the solution on the right became more acidic which

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4. The solution on the right became more acidic which decreased the level of O 2 in the blood. The shift in pH caused the hemoglobin to release the oxygen resulting in the darker brown colour. Blood turns to a deep red colour when deoxygenated. Hemoglobin is known as a respiratory pigment, which is defined as “any of various permanently or intermittently colored conjugated proteins and especially hemoglobin that function in the transfer of oxygen in cellular respiration”. 5. The pH of the soda should increase as the CO 2 that has escaped and is no longer able to act as a buffer. This results in a higher concentration of dissociated H+ molecules, therefore a higher pH reading. 6. As the chicken pants, the rapid breathing will cause a decrease in CO 2 levels causing equilibrium to shift to favour this reaction. This will in turn decrease levels of carbonic acid in order to compensate for making the eggshells weaker as there won’t be as much carbonate to bond with calcium. Error Analysis: In the buffer experiment, some of the dry ice was spilled which may have affected the expected change in pH. Again in the buffer experiment, when measuring out 0.40g of ammonium chloride,
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some of the ammonium chloride fell off the piece of wax paper onto the scale. So we added a slightly extra amount to compensate for the ammonium chloride lost in order to reduce error. Conclusion: In conclusion, we were able to investigate three experiments regarding equilibria including buffer systems, shifts in equilibrium, and multiple equilibria, as well as observe Le Chatelier’s Principle. The buffer system blood was simulated and tested. Also Work cited “Respiratory Pigment.” Merriam-Webster , Merriam-Webster, pigment. “Ammonium Chloride.” National Center for Biotechnology Information. PubChem Compound Database , U.S. National Library of Medicine, pubchem.ncbi.nlm.nih.gov/compound/ammonium_chloride#section=Top. “Hydrochloric Acid.” National Center for Biotechnology Information. PubChem Compound Database , U.S. National Library of Medicine, pubchem.ncbi.nlm.nih.gov/compound/hydrochloric_acid.
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  • Fall '14
  • Pell, Wendy

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