Solubility

contaminate environment by releasing, but are aquatically toxic. Synthesis:- The methylimidazolium and pyridinium ions have proven to be good starting points for the development of ionic liquids. Properties, such as melting point, viscosity, and solubility of starting materials and other solvents, are determined by the substituents on the organic component and by the counter ion. Many ionic liquids have even been developed for specific synthetic problems. For this reason, ionic liquids…

natural material i.e. starch, by simple enzymatic conversion. Solubility and dissolution rate of BCS class II drugs can be improved by addition or by complexation with hydrophilic carriers like cyclodextrins. Cyclodextrins have the capability to form inclusion complexes with the guest molecules i.e. poorly water soluble drugs. The formed inclusion complex shows significant changes physicochemical properties of drugs with respect to its solubility and dissolution rate. 2.1.2. Chemistry of…

happen. The first one is that a dilute solution. That happens when the solution has less solute than the maximum amount that it is able to dissolve. The second one is saturated. That happens when the amount of solute is equal to the amount as its solubility. The third one happens “if there is more solute than is able to be dissolved, the excess solute separates from the solution.” Said by Antoinette Mursa of UCD and Prof. Kenneth W. Busch.…

Mitchell Morgan CEM-161-007 Josh Ward 28th October 2015 Abstract The chief objective of this experiment was to identify the unknown compound. The following tests were conducted to eventually establish the identity of the compounded: qualitative solubility tests, anion and cation tests, flame test, and the formation of a precipitate. The physical properties of the unknown ionic compound found that it has no smell and was soluble in water. No ammonia smell was formed when conducting the…

Discussion of Results During the first week the goal was to determine the unknown compound. In order to determine the unknown compound, many tests were performed testing the solubility, pH level, conductivity, cations present (flame test), and the anions present in the compound. The anion test had positive results for the sulfate test due to the formation of a white precipitate, indicating the presence of a sulfate ion. For the sulfate test the unknown solution, potassium sulfate, and combining…

(123.2°C -126.9 °C)
! The Idea of recrystallization is to have the minimum solubility (better no solubility) at room temperature but when we heat up the solvent we want the maximum solubility. I tried to get less sand in my first filtration and get all of the crystals from my flask. A source of error might’ve been leftover sand (even after filtration) And the amount of solvent that…

amount of white powder. We labeled each test tube. For example the first test tube was labeled as “Substance A” , the second test tube as “Substance B’’, the third test tube as “Substance C” and last test tube was labeled as “Substance D” Water solubility test: 1. We took small amount of powder from test tube “A” and we put it on an empty test tube. We also took water from the water beaker using the pipette bulbs. We put the water on test tube “A”. We shook the test tube so that we can see…

water and hydrochloric acid, but was not soluble in sodium hydroxide, toluene, and acetone as indicated by Table 2. For a compound to be soluble it means that the compound must be able to dissolve in a certain liquid. This was proven by using the solubility tests. Since the unknown compound was soluble in water it means that it is a polar or ionic compound, and since it is soluble in hydrochloric acid it means that it is probably an organic base. It was soluble in water because water is a polar…

can react with the cation present in the solution. In step 5, water was added to the solution and then the test tube was heated so that the bonds holding the compounds in the precipitate together could effectively break. PbCl₂ has a higher water solubility, so if a yellow precipitate formed, then that would have confirmed that lead was present. If not, then extra steps were needed to be taken to confirm the presence of silver. In step 12, K₂CrO₄ was added because if barium was present, it would…

a solvent speeds up the movement of its particles. This speeding up will cause more solvent particles to collide into the solute. Under those circumstances, solute particles end up breaking loose and dissolve faster. Temperature usually affects solubility rates. Heating up the solvent gives the molecules more kinetic energy. The faster motion means that the solvent molecules collide with the solute with a higher frequency and the collisions occur with more force. Both components help to…