Data Sheet:Unknown acid #9Mass of the Unknown acid:(letter or number on the unknown bottle)#Concentration of NaOH(aq):0.209Volume NaOH added0.5 mlTUSE1.5ml2.0ml2.5ml30ml3.5mitom4.5ml>.0mlSsmL6.0m)6.5ml10ml7.5mlTwo's8.5ml9.0m)9.5m)100m)10.5 m11.0m11.5mi12.0ml12,5 ml13.0 mlB.5 ml14.0 ml14.5 ml15.0 mна3643.262.64 3:243:263:283.283:303:353.393:442 2.513.543.583.643.723.803.8673.93$ 4.004.064:1348 4.204.28 FEFT4.354.434.464.644.835.052.939.910.0995 MVolume NaOH added15.5ml16.0 ml16.5ml(70m/17.5mlPH10.6310:0311.2511.3711.50 5. Use the mass of the acid, the concentration of NaOH and the volume of NaOH added at the firstequivalence point to calculate the molar mass of the acid: (Show your work clearly and include properunits.)Calculated Molar mass of the unknown acid=6. Label the areas of the curve where a buffer is present. Locate the point where pH=pKa (halfway tothe equivalence point.) Label pK, on the graph. If the acid is polyprotic, label the pKa for eachequivalence point on the graph.S

We have to calculate the Molar mass of the unknown acid. We are given: Mass of unknown acid = 0.209…

5. Use the mass of the acid, the concentration of NaOH and the volume of NaOH added at the first equivalence point to calculate the molar mass of the acid: (Show your work clearly and include proper units.) Calculated Molar mass of the unknown acid= Label the areas of the curve where a buffer is present. Locate the point where pH=pKa (halfway to the equivalence point.) Label pK, on the graph. If the acid is polyprotic, label the pK, for each equivalence point on the graph.

5. Use the mass of the acid, the concentration of NaOH and the volume of NaOH added at the first equivalence point to calculate the molar mass of the acid: (Show your work clearly and include proper units.) Calculated Molar mass of the unknown acid= Label the areas of the curve where a buffer is present. Locate the point where pH=pKa (halfway to the equivalence point.) Label pK, on the graph. If the acid is polyprotic, label the pK, for each equivalence point on the graph.

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter9: Acids, Bases, And Salts

Section: Chapter Questions

Problem 9.28E

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