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Unknown Compound

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Abstract: The following experiments were performed in order to identify an unknown compound. Through many experiments, and confirmation tests, it was concluded that the unknown compound was potassium sulfate (K2SO4). The experiments included testing for solubility, anions, and cations. There were a list of possibilities to begin working off of.
This table represents the possible identities for the compound before experimentation began. Eventually after narrowing down the list of possibilities from testing for anions and cations, physical characteristics came into play to determine the identity. Confirmation tests were performed with our unknown compound and compared with tests with potassium sulfate. …show more content…
The compound produced through experimentation was indeed potassium sulfate. From confirming the tests, the compound was then weighed to calculate the percent yield. There were many different percent yield outcomes from producing the compound. The most successful was a percent yield of …show more content…
One confirmation test was testing for nitrate. Nitrate was tested for by first adding 2 ml of water to a 30 ml beaker. After that, 10 mg of potassium sulfate (K2SO4) was added to the water and dissolved. From this 3 ml of sulfuric acid (H2SO4) was added to the solution of water and potassium sulfate (K2SO4). Furthermore, this was put inside an ice bath to decrease temperature. Once cooled enough, 2 ml of iron (III) sulfate (Fe2SO4) was added into the mixture.This experiment was once again done with the unknown compound.
The unknown compound took the place of potassium sulfate (K2SO4) to test for nitrate. Once again two ml of water was added to a 30 ml beaker. From that 10 mg of potassium sulfate was added to the water, and 3 ml of sulfuric acid was then put into the solution. Once again the mixture was put into an ice bath to decrease the temperature. 2 ml of iron (III) sulfate (Fe2SO4) was added into the

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