experiment 15 Standardization of NaOH

experiment 15 Standardization of NaOH - Experiment 15...

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Experiment 15 – Standardization of NaOH Summer 2010 Name TD Khang Lab Section 409 Point Summary (See Blackboard for detailed grading rubric) Superior Excellent Satisfactory Fair Poor Omitted Introduction •Purpose of Report •Goals of Experiment Materials and Methods Results and Discussion •Description of data •Data Tables •Data Table Titles •Graphs •Figure Captions •Sample Calculations •Systematic Error •Random Error •Discussion of discrepancies Other Lab Technique TOTAL POINTS TA Comments/Suggestions:
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C HEMISTRY 102L R EPORT T EMPLATE EXPT. Standardization of NaOH 15 15 Introduction The purpose of this experiment is to standardize a solution of sodium hydroxide and determine the molarity of it. The acid-base reaction involved is between potassium acid phthalate (KHP) and NaOH. NaOH is titrated into a solution of KHP with unknown molarity. The KHP is titrated until the end point or the equivalence point is reached. The volume of titrant necessary to reach this point is recorded. The volume is used to determine the concentration of NaOH in the solution. While titrating, there are proper techniques that need to be used. These techniques are mixing the titrant solution and unknown solution thoroughly and controlling the addition of the titrant to the unknown solution. The goals of this experiment were to find the equivalence point of the acid-base reaction and use the volume of NaOH to determine the concentration of NaOH in the solution. The NaOH was the titrant and it was added to the KHP solution until the equivalence point or equilibrium was reached. Phenolphthalein was used as a colorimetric indicator for the KHP solution. A few drops were added which caused color change when NaOH was added. The volume of NaOH used to reach the end point or equivalence point was used to determine the concentration of NaOH in the solution. Materials and Methods
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experiment 15 Standardization of NaOH - Experiment 15...

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