Solubility Lab

n this lab experiment factors that affected solubility are temperature, liquids, concentration, pressure, polarity, and molecule. In this experiment we use temperature, centrifuge, and concentration solutions to be able to achieve the results that we wanted. Step one of the experiment was to mix HCl, to cause a precipitation form, after that we had to decant the solution, then we used a centrifuged to separate the the precipitate of the supernatant liquid. After the decant was done, then the process of water was added, then 2 test tubes was heated with the solutions. The heat from the water caused reaction increased, which increased the the movement of the ions. The heat dissolved the precipitate. The next step we heated the solutions, then placed a filter and funnel to filter the solution through that. The temperature factor was the most importance because Pb2+ needed to be maintained at a certain temperature above to make sure that it was a dissolved in the filtrate. Precipitation didn’t happen because of the fast cooling of the solution in to cold ice beaker. The heat helped to also create the precipitate. After it was filtered, we washed it. The next
In layman’s terms in this experiment it was used to differ reagents to create a precipitate. Changing the reaction through addition of HCl we can see that it created a precipitate, when filtering it, it can be see that the common ion effect is dependent on the solubility for each ion tested in the lab. First step we separated and for lead we used the filtrate with a concentration of HCl to create a change in equilibrium, for silver we use a higher concentration because the solubility of silver is lower than lead. For mercury we used a base because it precipitated in a basic solution. When adding and removing the reagents we shifted the reaction and equilibriums and we got our