Practical Midterm Exam - Introduction: The purpose of...

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Introduction: The purpose of conducting this experiment is to obtain the amount of aspirin in one tablet. Aspirin is also known as acetylsalicylic acid, HC 9 H 7 O 4 . There are no other acidic components of the tablets. The molecular weight of the acetylsalicylic acid ended up being 180.1. Today, titrations will be performed to find the amount of NaOH used to change the color of the solution. Four titrations will be done and an indicator will be used called phenolphthalein. The tablets will be crushed to obtain a smooth substance and then placed in the flasks with some water; the titrations can then begin, using the NaOH in the buret. Experimental (Materials, Methods, Procedure): Materials and Methods: A series of materials and methods were used throughout this experiment. Materials used are as follows: Aspirin tablets (acetylsalicylic acid, HC 9 H 7 O 4 ) NaOH (0.113 M) Phenolphthalein solution (indicator) Buret clamp Buret, 50 mL 250 mL Erlenmeyer flasks (3x)
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Practical Midterm Exam - Introduction: The purpose of...

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