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Buffer Design Lab.pdf - Buffer Design Lab Lauryn McKenna...

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Buffer Design LabLauryn McKennaAshlynn Adams and Leah Burge10 February 2020
AnalysisThe NaOH buffer was able to neutralize 31 mL of citric acid and the HCl buffer was able toneutralize 33 mL of dihydrogen citrate before the pH changed by more than one unit. The NaOHwas able to neutralize .014 mol citric acid and the HCl was able to neutralize .005 molNaH2C6H5O7. Overall, the ratio of moles of base neutralized to moles of acid in buffer is 1.6:1and the moles of acid neutralized to the moles of base in the buffer is .56:1.ConclusionA weak acid, citric acid, and a weak base, dihydrogen citrate, were mixed together toform a buffer solution. A strong acid, HCl, and a strong base, NaOH, were added separately totitrate the solution. When HCl was added to the solution, it neutralized the weak base and whenNaOH was added to the solution, it neutralized the weak acid. The titrations, overall, created abuffer which had a buffer zone. The buffer zone was the volume of titrant added, where the pH

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pH, Buffer Design Lab, mL of citric acid

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