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COncocting Barium Sulfate

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Cody Keller Period 2 Concocting Barium Sulfate Introduction Barium Sulfate is a white substance, liquid or solid, with the chemical formula being BaSO4. Barium sulfate is a radiopaque agent, which is used in order to help x-rays be more visible due to the contrast between the barium sulfate and the x-rayed parts of the body. This substance is dangerous, but due to its poor solubility ingestion will not result in the body's absorption of the toxicity of it. Some of the dangers of ingesting Barium Sulfate however are: bloating, constipation, cramping, diarrhea, nausea/vomiting, stomach/lower abdominal pain, tightness in chest, troubled breathing, or wheezing. Barium Sulfate also reacts violently with Aluminum powders. Prolonged exposure to Barium Sulfate dust can result in baritosis, which is a form of benign pneumoconiosis. Barium Sulfate is insoluble in most substances, except for concentrated sulfuric acid. Research Question An ample research question for this particular lab would be "How can one create five grams of Barium Sulfate?" This task explores the use of knowledge of different chemicals regarding their solubilities, concentrations and characteristics and the use of this knowledge in order to make a pre-determined five grams of Barium Sulfate. ...read more.


2. First we placed 5.6 g of Ba(NO3)2 solid powder into the 700mL beaker 3. We then proceeded to make it into a liquid by adding approximately 100mL of water, and to better dissolve these two substances we put the solution onto a hot plate and stirred until it was sufficiently dissolved 4. Then we put 2.1g or 4mL of 12.5M H2SO4 into the 50mL graduated cylinder 5. Then we diluted the 12.5M H2SO4 to 5M by adding in 6mL of water, in order to achieve 10mL of 5M H2SO4 6. We then poured the dissolved water and Ba(NO3)2 along with the 10mL of 5M H2SO4 together in the other 700mL beaker 7. We then observed the reaction and recorded these observations. The solution was HNO3 and BaSO4, with the BaSO4 a white precipitate in the liquid HNO3. 8. To isolate the BaSO4, it needs to be filtered. We weighed the coffee filter with the digital scale, which came out to 0.5g and then placed the filter on the inside of the funnel. 9. Place the funnel over the vacuum flask so that the HNO3 will go through the funnel into the vacuum flask and the remaining substance will isolated BaSO4 after the substance from the 700mL beaker is poured into the funnel very slowly 10. ...read more.


This inaccuracy suggests that something in our lab went awry. When pumping the nitric acid out of the barium sulfate, we overflowed the filter on the vacuum flask, seeing as how we didn't take into account how thick the substance actually was. This mishap was most likely the largest contributor to our inaccuracy. Also, human error is always a factor. Inevitably, somewhere down the line we took a reading wrong or something of that nature, further skewing our results. This lab brought up a few questions for further investigation. After finishing the lab, the question occurred to me, "if we had used an alternate method to make five grams of Barium Sulfate, could we have been more accurate, less accurate, or would our results have remained the same?" To make a better lab, there are a couple things that could be done. First would be to take better care to observe the substances we work with much more carefully. By doing this, there is less likely of a chance of having something happen such as overflowing the funnel. Also, one could record observations better. This would make the analysis of the lab much easier, with less guesswork to do. ...read more.

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