Phun With Phosphate - Phun With Phosphate Anthony Upshaw...

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Phun With PhosphateAnthony UpshawPartner: Brock HarrisChemistry 112L-007April 8, 2016
A. Research Questions1) what happens when NaOH or HCl is added to your Buffer?2)What happens when a buffer is not present?B. Observations and ResultsTable 1.Volume (L)0.10 LConcentration (M)0.100 MpH6.6Table 2.ComponentMolar mass(g/mol)Mass(g)MolesAcidic or BasicNa2HPO47H2O268.070.5360.002BasicNaH2PO4H2O137.991.1010.008AcidicTable 3.pH (measured)pH (calculated Prediction)DI water5.6iiiiiiiiiiiiiiiiiiiiiiiiiiiPhosphate Buffer6.26.6Buffer+ NaOH6.257.79Buffer + HCl6.166.16NaOH in H2O11.3911.30
HCl in H2O2.662.69Calculations refer to page 1 in notes.C. ClaimsThe buffer allows for the solution to absorb more OH and or H ions and stay close to the original pH. When the buffer is not present, the pH goes drastically towards the ions which were mixed into the solution.D. EvidenceAs shown in the data, when the buffer was present, the solution was able to stay with in a small difference of the original pH. This was

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