Chemlab9 - CHY 123 Buffers and Salts Introduction Acids and...

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CHY 123 Buffers and Salts Introduction Acids and bases play an important role in our everyday lives. Things from soap to vinegar all fall within the classification of acids and bases. By using a pH meter we can find out just how acidic or basic a substance is. With these acids and bases comes buffers that are simply an acid and base mixed together that helps to control the pH of a solution. With these and a pH meter we can investigate the properties of both strong and weak acids and bases. Procedures We gathered the needed chemicals and containers needed for the experiment. We then set up the Bunsen burner, boiled some distilled water for 5 min, and then let it cool. At this point we then put a stirrer in it and started taking pH readings with the pH meter. We stirred the water on high for about 15 seconds and then took the pH reading again. We repeated this until there wasn’t a real difference in the pH values. We then took 10ml of the 1.0M HCl and put into a volumetric flask with 90ml of distilled water creating .1M HCl. We then repeated this procedure to create .01M, .001M, . 0001M, and .00001M HCl solutions. We then recorded the pH of each solution. We then repeated this experiment with 1.0M acetic acid and recorded the pH for those solutions. We then prepared 0.1M solutions of NaCl, NH4Cl, and CH3COONa3H2O. we did this
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This lab report was uploaded on 04/18/2008 for the course CHY 123 taught by Professor Professor during the Fall '08 term at University of Maine Orono .

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Chemlab9 - CHY 123 Buffers and Salts Introduction Acids and...

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