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Quality Control Technique

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Introduction
Quality control is a technique used to evaluate objects that people use on a day-to-day basis. This technique is used to evaluate the ingredients in food and see if they are accurate. The objective of this quality control experiment was to examine different acid and base materials and test their pH levels. As a part of the experiment, a procedure was formed to create NaOH and HCl standard solutions and then conduct acid-base titrations to decipher between the acid-base materials. The standard solutions were used to dilute the acid-base materials for the titrations and then test what pH level each one possessed. Titration was used “for determining the quantity or concentration of a substance in a solution” (Dartmouth College, 1997). In this experiment, the substances were the acid or base materials. As a hypothesis, the standard solution NaOH was going to determine the acidic substance and the HCl solution was going to determine the basic substance.

Methods
Materials- As a group, proper lab attire was worn at all times. Once the lab bins were obtained, other materials were retrieved and brought back to the lab bench. The materials included pH strips and reagent chemicals such as phenolphthalein and bromothymol blue. These reagent chemicals emanate a certain color to help determine whether each substance was an acid or a base. According to Senese (1997), Bromothymol turns blue when it comes in contact with a base and phenolphthalein turns pink when it comes in

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