Report Form for Phosphoric Acid Titration Curves - Report...

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Report Form for Phosphoric Acid Titration CurvesChemistry 112 Lab Section 005November 4, 2014A.The research questions for this lab are:1.What is the initial concentration of the H3PO4?2.What are pKa1& pKa2(and Ka1& Ka2) for H3PO4?3.What are the H3PO4concentrations in my soft drink?B.Observations & ResultsTablesSummarize your data in the following tables.Table 1. Phosphoric Acid Titration Data and Concentration Results.[NaOH](M)EquivpointpH atequivpointNaOH volto reachequivpoint (mL)NaOHmoles(mol)H3PO4moles(mol)Starting[H3PO4](M)Average[H3PO4](M)0.10231st4.5 pH12.75 1.304 x10-31.304 x10-30.0430.0482nd10 pH15.501.586 x10-31.586 x10-30.053Table 2. Phosphoric Acid Equilibrium Constants.Equil #pKaKa12.255.62 x 10-327.255.62 x 10-8Table 3. Cola Soft Drink Titration Data and Concentration Results for SodaStream Dr. Pete[NaOH](M)EquivpointpH atequivpointNaOH volto reachequivpoint (mL)NaOHmoles(mol)H3PO4moles(mol)Starting[H3PO4](M)Average[H3PO4](M)0.051151st4.5 pH2.251.151 x10-41.151 x10-42.88 x 10-34.32 x 10-32nd9.35 pH4.502.302 x10-42.302 x10-45.75 x 10-3
Table 4. Phosphoric Acid Concentration in Various Cola Soft DrinksCola name[H3PO4] (M)SodaStream Cherry Cola0.01183SodaStream Cherry Cola0.00475SodaStream Cherry Cola0.0703SodaStream Cherry Cola0.00607SodaStream Cherry Cola0.01022SodaStream Cherry Cola0.007665SodaStream Dr. Pete0.00432SodaStream Dr. Pete0.00430C.Complete claims for each of the research questions above. Include appropriate units.1.

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