Proj 5 Disscussion

Proj 5 Disscussion - carbonate precipitating back out of...

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DISCUSSION In order to create a calcium supplement a process needed to be discovered in order to find out how to create a soluble calcium carbonate compound. The obvious answer to the problem was to add an acid to the compound until all of the calcium carbonate was dissolved. Unfortunately strong acids typically under a pH of 4 are harmful to the human body and the calcium supplement would be dangerous to the human. To avoid this problem, different acids needed to be tested to see which one could dissolve all of the solute with the most neutral ph. Hydrochloric acid dissolved all of the solute, but unfortunately the resulting solution ended in a pH close to 1. To fix this sodium hydroxide was added to help neutralize the acid at a cost of calcium
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Unformatted text preview: carbonate precipitating back out of its soluble form. This wasted calcium carbonate and was not cost efficient for the task. Fortunately acetic acid was then tested and gave much more desirable results. Acetic acid completely dissolved the calcium carbonate while keeping the resulting pH at 5. This meant no sodium hydroxide needed to be added to the solution and all of the calcium carbonate could be used for the supplement creating a far superior cost effective product and thus the right acid had been found for the job. The calcium concentration is .4032 M. We added 25.2 mL of hydrochloric acid....
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