Discussion of Results: This experiment consists of three different parts. The main goal of the experiment is to identify the unknown compound the lab group was given. Along with this, the group is to discover the compounds many physical or chemical properties. Lastly, the group is supposed to create and preform two syntheses of the compound and see how they compare and contrast in different areas like costs effectiveness, safety, and potential yield of the compound. Through all of these different goals, the underlying key goal is to learn more about this unknown compound through the group’s own research and experiments.
The unknown compound had no distinct smell and appeared odorless. This confirmed that the unknown compound was indeed an ionic compound. Our compound appeared to be a solid, but we never did a magnifying test to see if the compound was homogenous or not. For quantitative testing, we dissolved our compound in water and it did dissolve, so this suggests that the compound is …show more content…
We did a pH test to see if the compound is acidic or basic. We submerged a pH strip a solution that consisted of .475 g of K2SO4 and H2O. The pH strip turned red when dipped in the solution, and this indicates an acid. Then we preformed a conductivity test. This is used to see if the compound is strong or weak. So we mixed .475 g of K2SO4 with 15 mL of H2O and we used a voltmeter to test the resistance in ohms, on the level of 200 K. The result came out to be 33 ohms, which showed that the compound has a high resistance and is a relatively weak acid. Lastly, we preformed a precipitate test to confirm that the molar mass of K2SO4 is 174g. We weighed .5 grams of K2SO4 and dissolved it into 15 mL of H2O. We combined that with 10 mL of BaCl2 solution. We filtered out the precipitate using a flask, cone, and filter paper. We then measured the mass of the precipitate to be .597 g. We then used equations to solve for the molar
The unknown compound had no distinct smell and appeared odorless. This confirmed that the unknown compound was indeed an ionic compound. Our compound appeared to be a solid, but we never did a magnifying test to see if the compound was homogenous or not. For quantitative testing, we dissolved our compound in water and it did dissolve, so this suggests that the compound is …show more content…
We did a pH test to see if the compound is acidic or basic. We submerged a pH strip a solution that consisted of .475 g of K2SO4 and H2O. The pH strip turned red when dipped in the solution, and this indicates an acid. Then we preformed a conductivity test. This is used to see if the compound is strong or weak. So we mixed .475 g of K2SO4 with 15 mL of H2O and we used a voltmeter to test the resistance in ohms, on the level of 200 K. The result came out to be 33 ohms, which showed that the compound has a high resistance and is a relatively weak acid. Lastly, we preformed a precipitate test to confirm that the molar mass of K2SO4 is 174g. We weighed .5 grams of K2SO4 and dissolved it into 15 mL of H2O. We combined that with 10 mL of BaCl2 solution. We filtered out the precipitate using a flask, cone, and filter paper. We then measured the mass of the precipitate to be .597 g. We then used equations to solve for the molar