Topic > Hydroxyapatite Solubility Assay - 819

We collected 0.994 g of (NH4)2HPO4, which was less than our initial calculations recommended. This caused (NH4)2HPO4 to be the limiting reactant in our reaction instead of the hydrate, thus reducing the amount of hydroxyapatite produced. During the transfer of the reaction solution into the vacuum filter, some of it remained on the walls of the beaker. Furthermore, when we removed the filtered product from the vacuum funnel, some of the product was lost, causing the weighed mass of the product to be less than what was actually produced in the reaction. Finally, when testing the product's solubility in acid, we did not record the amount of product dissolved in the acids, so we also lost an unknown amount of product in this step. All of these product losses will contribute to a lower percent yield calculation when we weigh the dry sample of