1
INTRODUCTION
This simulation/lab experiment will show us how to institute a titrant solution. Using KHP,
titration will be performed to standardize an NaOH solution with phenolphthalein as indicator.
NaOH solution will then be calculated.
The formation of ionic salt and water is what constitutes an acid-base reactions (double
displacement). KHP is considered a primary standard wherein the mass is easily and correctly
identified. By titrating it with a solution, the solutions can be standardized. This will be used as
a titrant later in another titration experiment since the solution is more accurately known.
HYPOTHESIS
The color change for the indicator phenolphthalein at the end of the titration will be almost or
near the equivalence point.
MATERIALS AND METHODS
MATERIALS: KHP, KHP jar, balance with tare button, stir bars, scoopula, Erlenmeyer flask,
paper for weighing, stir plate, NaOH, hot plate, DI water, phenolphthalein, graduated cylinder,
beaker for disposal of chemicals, wash/waste bin, buret, white paper.
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METHODS
The simulation process involves seven phases beginning with prepping of buret, followed by
KHP prep. The third phases involves titration set-up and addition of titrant which falls under the
fourth phase. The volume of sodium hydroxide is determined to end point. Phase six is the
titration process. The NaOh solution molarity will be calculated and determined at the end of this
phase. Results of calculation will be recorded in lab data.
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4
RESULT
The molarity of NaOH solution /concentration of NaOH is calculated with result of 0.3166
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CONCLUSION
When observing and keeping track of a titration with an indicator (for this experiment, it is
phenolphthalein) which color solution persists for a longer time, it is important to note that it is a
time indicator for adding tiny amounts of (NaOH) titrant to the KHP (analyte solution). The
color change of end point is near the point of equivalence for this experiment which is pale pink.
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Reference
Silberberg, M. (2021). Chemistry: The Molecular Nature of Matter and Change. Vitalsource.
Retrieved January 28, 2022, from
https://online.vitalsource.com/#/books/9781260477467?context_token=ae274860-64e8013a-6362-3e913ca4200a