Acids And Base Titration Lab Report

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ACID-BASE PROPERTIES OF SODIUM CHLORIDE, SODIUM FORMATE AND AMMONIUM CHLORIDE

INTRODUCTION
The objective of this experiment is to examine the definitive characteristics of acids and bases by investigating the characteristics of strong versus weak acids; more specifically, why these differences are important in the process of titrations. In this experiment, there are two titrations performed and measured the pH of one salt solution. This experiment includes a strong acid and strong base titration, weak acid and strong base titration, and the pH measure of a salt solution. In performing a titration, a stir-bar, stir-plate, burette and pH meter. In the process of titration, it is required that the amounts of base added from the burette is as precise as possible in order to achieve a proper titration. After every amount of base added from the burette, the pH is measured by using a calibrated pH meter. Whilst titrating, only small and precise amounts of base can be added from the burette in order not to
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Both titrations in this lab reflected these properties, such as acid-dissociation, acid-dissociation constants, etc. In parts A and B, it demonstrated the differences between strong and weak acids and why there is a significant difference between equivalence points, as one value was 7.21 and why the other was 8.38. Regardless that the pH differences are not dramatic, it is important to acknowledge the reasons why pH values occur as they do at the different stages of titration – pre-titration, buffer region and hydrolysis. Lastly, all pH’s are reflected by the concentration of hydronium ions in a solution, which is determined by the salt solution itself and its reactions with water. Just as in ammonium chloride, the solution has two possibly reactive ions with water and must evaluate and compare the equilibrium constants to determine the effect of the pH of the

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