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Concentration Lab Gold Thompson- Adiuku 510469 Mrs. Harris January 6TH 2016
Introduction/Aim The molarity of an unknown acid will be determined using a method is called “titration”. Titration is a procedure involving the carefully measured and controlled addition of a solution from a buret into a measured volume of a sample solution. A buret is a glass tube with a tap at the end, and it is known for delivering the volume of a liquid. In this experiment, the purpose of the concentration of acetic acid lab is to determine the concentration of acetic acid in vinegar .The indicator and the phenolphthalein was added at the end of the titration, the indicator is when the colour changes at a certain pH value, and phenolphthalein is a common indicator that changes its colour a 7 pH for the strong acids and bases. Background Information Titration is a technique that can be used to determine the unknown acid of a solution. In this case, an unknown concentration, meaning the amount of dissolved acid can be used in the concentration for the hydroxide base. This chemical reaction is called neutralization, in which means that the acids and the bases react in water to make salt and the water. We can also use the indicator, which changes colour at a certain pH scale. The reason why we can use the indicator, so that we can determine if the chemical reaction has been fully neutralized.

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