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REPORT SHEET Determination of the Dissociation Constant of a Weak Acid B. Standardization of Sodium Hydroxide (NaOH) Solution Trial 1 Trial 2 Mass of bottle + KHP 93,208 94,010 Mass of bottle 92,786 93,659 Mass of KHP used 0.422 0.442 21,60ML 38.61 L Final buret reading Initial buret reading 21,60 m² 0.68m 20.92 mL of NaOH used 17,01 Molarity of NaOH Average molarity (show calculations and standard deviation) 0,041 Trial 3 85,517 85,162 0.355 18,99 1,71ML 17,28

REPORT SHEET Determination of the Dissociation Constant of a Weak Acid B. Standardization of Sodium Hydroxide (NaOH) Solution Trial 1 Trial 2 Mass of bottle + KHP 93,208 94,010 Mass of bottle 92,786 93,659 Mass of KHP used 0.422 0.442 21,60ML 38.61 L Final buret reading Initial buret reading 21,60 m² 0.68m 20.92 mL of NaOH used 17,01 Molarity of NaOH Average molarity (show calculations and standard deviation) 0,041 Trial 3 85,517 85,162 0.355 18,99 1,71ML 17,28

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ISBN:9781305957404
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Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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I need help finding the Molarity of NaOH for all 3 trials. The answers I have are wrong.
### Determination of the Dissociation Constant of a Weak Acid #### Report Sheet **Name:** _____________________ **Date:** ____________________ **Desk:** _____________________ **Laboratory Instructor:** _______________________ --- ### B. Standardization of Sodium Hydroxide (NaOH) Solution **Trial 1:** - **Mass of bottle + KHP:** 93.208 g - **Mass of bottle:** 92.786 g - **Mass of KHP used:** 0.422 g - **Final buret reading:** 21.60 mL - **Initial buret reading:** 0.68 mL - **mL of NaOH used:** 20.92 mL **Trial 2:** - **Mass of bottle + KHP:** 94.010 g - **Mass of bottle:** 93.659 g - **Mass of KHP used:** 0.442 g - **Final buret reading:** 38.61 mL - **Initial buret reading:** 21.60 mL - **mL of NaOH used:** 17.01 mL **Trial 3:** - **Mass of bottle + KHP:** 85.517 g - **Mass of bottle:** 85.162 g - **Mass of KHP used:** 0.355 g - **Final buret reading:** 18.99 mL - **Initial buret reading:** 1.71 mL - **mL of NaOH used:** 17.28 mL **Molarity of NaOH:** - Trial 1: ________ - Trial 2: ________ - Trial 3: ________ **Average molarity (show calculations and standard deviation):** 0.041 --- In the section above, we focused on the standardization of a Sodium Hydroxide (NaOH) solution. In each trial, the mass of Potassium Hydrogen Phthalate (KHP) used and the volume of NaOH solution required to reach the endpoint were recorded. The results can be used to calculate the molarity of the NaOH solution for each trial, and eventually determine the average molarity and standard deviation to ensure accuracy in subsequent experiments.
Transcribed Image Text:### Determination of the Dissociation Constant of a Weak Acid #### Report Sheet **Name:** _____________________ **Date:** ____________________ **Desk:** _____________________ **Laboratory Instructor:** _______________________ --- ### B. Standardization of Sodium Hydroxide (NaOH) Solution **Trial 1:** - **Mass of bottle + KHP:** 93.208 g - **Mass of bottle:** 92.786 g - **Mass of KHP used:** 0.422 g - **Final buret reading:** 21.60 mL - **Initial buret reading:** 0.68 mL - **mL of NaOH used:** 20.92 mL **Trial 2:** - **Mass of bottle + KHP:** 94.010 g - **Mass of bottle:** 93.659 g - **Mass of KHP used:** 0.442 g - **Final buret reading:** 38.61 mL - **Initial buret reading:** 21.60 mL - **mL of NaOH used:** 17.01 mL **Trial 3:** - **Mass of bottle + KHP:** 85.517 g - **Mass of bottle:** 85.162 g - **Mass of KHP used:** 0.355 g - **Final buret reading:** 18.99 mL - **Initial buret reading:** 1.71 mL - **mL of NaOH used:** 17.28 mL **Molarity of NaOH:** - Trial 1: ________ - Trial 2: ________ - Trial 3: ________ **Average molarity (show calculations and standard deviation):** 0.041 --- In the section above, we focused on the standardization of a Sodium Hydroxide (NaOH) solution. In each trial, the mass of Potassium Hydrogen Phthalate (KHP) used and the volume of NaOH solution required to reach the endpoint were recorded. The results can be used to calculate the molarity of the NaOH solution for each trial, and eventually determine the average molarity and standard deviation to ensure accuracy in subsequent experiments.
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