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Unformatted text preview: 8. pKa=5.66 Molar mass =101.3 g/mol Name= potassium hydrogen phthalate 9. See Appendix A; page two for Tables 1 and 2 10. % error molar mass = 101.3-204.1/101.3 x 100= 101.4% % error pka= 5.66-5.51/ 5.51 x 100= 2.72% 11. pH= -log (5.2X10-6 )=5.28 12. Before pH at ½ equivalence point : Lots of HA little A-½ equivalence point: A little more HA than A-After ½ equivalence point but before equivalence point: About same HA as A-Equivalence point: Same HA as A-After equivalence point: More A-than HA 13. pH= 8.79 Sheldon Pope Individual Lab C=pK b A: [B-]> >[HB] H + <<OH-B: [B-]>[HB] H + < OH-C: [B-]>[HB] H + =OH-D: [B-]=[HB] H + > OH-E: [B-]<[HB] H + >OH-F: [B-]<<[HB] H + >>OH-...
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This lab report was uploaded on 04/18/2008 for the course CHEM 404 taught by Professor Bauer during the Spring '08 term at New Hampshire.
- Spring '08