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Unformatted text preview: soda sample. We used two methods: first, the HCl titration of the baking soda sample to determine its percent by mass and next, the thermal gravimetric analysis of the same sample. These were well designed experiments that definitely yielded the results we were looking for. Given, we were not expecting such a large gap in the two trials of the titration, but with experimental error, this can be expected. It is why we performed two trials. Although the two experiments yielded different numerical values, they did both prove that the baking soda sample was largely impure. Taking the average of the two experiments, the percent by mass of pure baking soda in the sample was 62.06%....
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- Fall '07