Common-ion effect

Compare and contrast the crystal structures and crystal chemistry of quartz, α-FePO4 and β-FePO4. FePO4 is also known as Iron (III) phosphate. Iron (III) phosphate is an inorganic compound. Most of the FeP04 has the structure of α-quartz which is α-FePO4. It has a tetrahedral molecular geometry. α-FePO4 is present at pretty low degree Celsius. It is also a transition metal as it is in the d-block in the periodic table. It can be studied at many different temperature which range from 294K to…

Our lab consisted of combining small amounts of aqueous solutions in order to observe their soluble nature (or lack thereof). The key concept that was involved in this lab was the concept of solubility, the ability of a substance (the solute) to dissolve in a solvent rather than to form a solid precipitate. Through this lab, we were attempting to determine the solubility of the solutions as well as observe how the solutions interact with each other -- if they form a precipitate once combined or…

The goal of this laboratory project was to identify the unknown compound and thoroughly investigate it to find its physical and chemical properties which reveal the way it might behave. This was done by performing many anion, cation, solubility, and pH tests to help us to determine the identity of our compound. The list of salts in the lab manual made it possible to narrow down the possibilities of our unknown compound. After identifying the compound, the goal was to synthesize the unknown…

the sulfate test. During the sulfate test, the solution became cloudy, the unknown substance did not completely dissolve, and there was evidence of a white precipitate present. These two tests determined that there was a possibility that the sulfate ion (SO ) was present in the unknown compound. The cation test resulted in the appearance of a pale violet color within the flame. This color meant that the unknown compound could contain the potassium cation. These findings lead to the consensus…

distributed between hydrogen and oxygen. 10. An ion is a molecule or atom that gets either a negative or positive charge as a result of it losing or gaining one or more of its valence electrons. An ionic bond has an electrostatic force between oppositely charged ions in an ionic compound which affects the chemical link between two atoms. An ionic bond is formed when an electron is essentially transferred from one atom of a pair to the other creating ions. A sodium atom transfers an electron…

The observed colour was orange, which fit the emission spectrum. Few specks of blue were observed, this might be due to the Bunsen burner not being completely cleaned or the sodium not being completely pure. The observed colours match those of the spectrum, and can be accepted as true. The observed colour for lithium was a dark red colour. Lithium’s emission spectrum consists of purple, blue, cyan and red. Few darker specks of blue were observed, possibly from the same substance that made the…

When using Alamar Blue each color change means a specific effect the well had. In this case, red means the cells are alive, purple means the cells are dying, and lastly blue means the cells have dead. Figure 1 results, demonstrated that all the wells that have cells have the color change of red/pink meaning that the cells are all alive. Demonstrating that the reagent/chemical (Curcumin) didn’t have any effect to the cells (Hek293A). As seen for Row B: Columns 10-12 the color change…

chemical and physical properties but also what the unknown compound might react with to form other compounds. After performing the four anion tests, a positive identification was able to be made showing that the unknown compound contained a chloride ion since a white precipitate was formed from the reaction (Table 1). The sulfate, nitrate, and carbonate tests all yielded negative results when no precipitate was formed. The reaction of the chloride anion is as follows: Cl- + AgNO3 -->…

specific unknown compound. These tests included a solubility test, which determines whether the compound is soluble in water, a pH test to determine the relative acidity of the compound, and a flame test, which shows the presence or absence of metal ions, and an anion test. The compound was then tested with five other known compounds to provide more evidence of the true…

Free radicals form when weak bonds split. They need to be stable so they react very fast with other compounds. When the free radical attacks a molecule, it takes an electron, which turns that molecule into a free radical. It is like the domino effect. The body may also create free radicals on its own. It creates them in small amounts so it’s not very harmful to the body. Harmful things in the environment will also create them. The body is only able to handle a certain number of free radicals…